Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fe70b52ca37fb8a…

MALICIOUS

PDF

83.8 KB Created: 2021-07-10 04:12:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: a3d7cd5814d77cf6bdc8ef8b3a186395 SHA-1: 329a8d29db33913ac5b2d3d8991107ffd488abdf SHA-256: 6fe70b52ca37fb8afe8895a3fcf5be423ace67555f4efec34ab29b74a94319e3
164 Risk Score

Malware Insights

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

The PDF document contains a high number of external links, many of which point to compromised WordPress sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The presence of a 'download button' heuristic further supports a lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9833

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607722c1c9503---tajomul.pdf In PDF document text
    • https://beribuket.ru/wp-content/plugins/super-forms/uploads/php/files/e1b8490757d36bf11768dbaf31410118/purali.pdfIn PDF document text
    • http://www.virtualaid.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1606f4561d1322---95432974004.pdfIn PDF document text
    • http://hayatteknoloji.com/webimage/file/13230843106.pdfIn PDF document text
    • http://dianacb.cz/userfiles/file/95150195033.pdfIn PDF document text
    • http://eotp.info/sites/default/files/fck/file/rotijegodigalalatu.pdfIn PDF document text
    • https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16074f919cec3d---nemebevosugiduwavixido.pdfIn PDF document text
    • https://lostsoulsmemorialnj.org/wp-content/plugins/super-forms/uploads/php/files/4282fa4f13b7e7a4aaaac7e4ee31b8d8/92389218299.pdfIn PDF document text
    • https://xn--64-mlcufjjaii0l.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/8b0a39175066693733e08b2013164b81/budumowowit.pdfIn PDF document text
    • http://work4shop.cz/userfiles/file/73359849488.pdfIn PDF document text
    • http://gf-location.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160b71608c44da---patemewewobasoxavikuri.pdfIn PDF document text
    • http://psychoterapia-przemysl.net/img/userfiles/file/76577667183.pdfIn PDF document text
    • http://esoftland.com/userfiles/file/femikuwuperugafukaketu.pdfIn PDF document text
    • http://eros-arena-reutlingen.de/eros/userfiles/file/47050960486.pdfIn PDF document text
    • http://hrdiborice.cz/erucom1/files/files/ledurefatijafuvema.pdfIn PDF document text
    • http://uceng.net/_UploadFile/Images/file/74043277270.pdfIn PDF document text
    • http://www.gunyagder.org.tr/wp-content/plugins/super-forms/uploads/php/files/n6rhriaonmc44dcu95adoi0v10/rorivenuxe.pdfIn PDF document text
    • http://k-yoga.org/file_upload/spaw_upload/file/20210605082026.pdfIn PDF document text
    • http://cungcapluonech.com/upload/files/raviforegomopunonixibosix.pdfIn PDF document text
    • http://nsdadventist.org/FCKData/file/gomejawetokev.pdfIn PDF document text
    • http://lnshiyue.com/userfiles/file/20210706155804_1127210782.pdfIn PDF document text
    • http://la-roofers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160903ff098629---65458094262.pdfIn PDF document text
    • http://modellszerviz.hu/userfiles/file/pejusite.pdfIn PDF document text
    • http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a094e41902---zejosigenumakefanose.pdfIn PDF document text
    • http://cafegreenwichvillage.com/uploads/files/gunenupubomekinaweze.pdfIn PDF document text
    • http://irk-yoga.ru/upload/files/kivawifasekifif.pdfIn PDF document text
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/408gelkipm5ac0a35ir6udl112/rojasedonutesajirotejuxef.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=class+9+cbse+english+beehive+solutionsPDF link annotation
    • 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_off0000e184.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE184 10916 bytes
SHA-256: 18370ba2c6fe77868c3420211ab657144e6439dbb7c3d655eac5b93bc8589df8
font_01_sfnt_off0000fad2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAD2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000112e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112E4 17112 bytes
SHA-256: 9c26cfa5f37d8876211dc364c45deb81af3934bb77888c8521ba5139122f523d