Malicious PDF — malware analysis report

Static analysis result for SHA-256 6225c6c80d365b1d…

MALICIOUS

PDF

94.0 KB Created: 2021-06-30 11:11:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 812368a124f1229ce142ada67818033a SHA-1: 4efc1e0a3e7c761e0fb120e78a1c42f58ca733b4 SHA-256: 6225c6c80d365b1dc114a8af0058df0051cfb27bf965fcef1bc59a6ad2d0e14e
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links to external sites, many of which appear to be part of a link farm designed to host malicious files. The 'SE_BROWSER_INSTALL_LURE' heuristic indicates the document likely prompts the user to install a fake browser update or plugin, a common social engineering tactic. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to download and execute a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9929

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://laborke.ru/uplcv?utm_term=how+to+open+pdf+in+kindle PDF link annotation
    • http://perles-del-beya.com/userfiles/file/suralumexupori.pdfIn PDF document text
    • http://www.colegiometa.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/160a858173f0d1---nowuzejoxoniwakile.pdfIn PDF document text
    • http://amtusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160862ca7bf725---dizofoveb.pdfIn PDF document text
    • https://www.endthestigmacounselling.com/wp-content/plugins/super-forms/uploads/php/files/f1ajgncbb2ge4agpspm64baepc/rupezetizasejurixidem.pdfIn PDF document text
    • https://apoc.com.au/wp-content/plugins/super-forms/uploads/php/files/c918b366219c7a837ad7c5e22906714c/watawomotixu.pdfIn PDF document text
    • http://sochistandart.com/ckfinder/userfiles/files/nenudazowatedufop.pdfIn PDF document text
    • https://ohligschlaeger-berger.de/wp-content/plugins/formcraft/file-upload/server/content/files/16076197937f12---33700398445.pdfIn PDF document text
    • http://aberdeeneyes.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c5b7664d1ca---74914415864.pdfIn PDF document text
    • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/160d095c6a87e9---welifubudenuguvojuvuzuwew.pdfIn PDF document text
    • https://groupburuemas2.com/contents//files/74089128564.pdfIn PDF document text
    • https://stewsites.com/wp-content/plugins/super-forms/uploads/php/files/a7fa008f5b5f54a2104683541f3f1ad4/geresexifupunavo.pdfIn PDF document text
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080f836b72b3---45387550583.pdfIn PDF document text
    • http://afgventuregroup.com/cfiles/file/malanumop.pdfIn PDF document text
    • http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d4c51a0631---11319393908.pdfIn PDF document text
    • http://go-trec.com/wp-content/plugins/super-forms/uploads/php/files/o0r7kk5uj85cpa9hhln7gqolco/savezedififi.pdfIn PDF document text
    • https://fatheragneliti.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfabe028b35---batijekiruroso.pdfIn PDF document text
    • https://k9-warrior.com/wp-content/plugins/super-forms/uploads/php/files/aqhp05c9nfvv42ik8vmgbfsevm/venuderosapejasotif.pdfIn PDF document text
    • https://dispomydeal.com/wp-content/plugins/super-forms/uploads/php/files/52f03df78f27d5b4deda21350a24b960/bisafaxowotajepivemibakap.pdfIn PDF document text
    • https://www.rogierstoel.nl/wp-content/plugins/super-forms/uploads/php/files/vdi5ht5ftsl5b739febjiarkdn/benolajawedesu.pdfIn PDF document text
    • https://heykidsletscook.info/wp-content/plugins/super-forms/uploads/php/files/38a9c3f0469d73cae56e6d3f17bb53e6/guzojexivalitugukodezopa.pdfIn PDF document text
    • http://mackielaw.net/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/15539852137.pdfIn PDF document text
    • http://cartopack.com/Images/file/10049811203.pdfIn PDF document text
    • http://permanentnimakeup-brno.cz/userfiles/files/jiger.pdfIn PDF document text
    • http://scandirent-new.ru/uploads/assets/file/20268875847.pdfIn PDF document text
    • https://aulacvn.com/upload/fck/file/mekesezudegekekanojupujax.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010d61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D61 10232 bytes
SHA-256: 09650429c14ab0b20ae4ec8178ff3374af8c9479b014d825d1658a22ad074051
font_01_sfnt_off00012471.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12471 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013c83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C83 17660 bytes
SHA-256: a4915f4a7a907875c54cdccbc8b9b2391beeb1b3b38d120b878ba654d6df2612

Open this report in the interactive analyzer, or submit your own file for analysis.