Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac2e6c7655064304…

MALICIOUS

PDF

104.3 KB Created: 2021-07-26 09:55:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: 007548dfe00a510d70a3620f4cdbddc5 SHA-1: 31c3150d03f7a6070fc014f5780c2ecd16b5241b SHA-256: ac2e6c7655064304924f2c41243737199123983f31eb368dbfb1ecfcd03b7d4a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The file contains numerous links, many pointing to compromised CMS upload storage and disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The presence of external URIs and link farms indicates an attempt to lead the user to a potentially harmful destination, likely for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

Heuristics 6

  • 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.
  • 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://www.indee-r.fr/wp-content/plugins/super-forms/uploads/php/files/72d69d85fe82dd12087221cb06a902fb/72422258720.pdf In PDF document text
    • https://echipamente-scule.ro/userfiles/file/basojegowamejolobok.pdfIn PDF document text
    • https://stakeoutllc.com/wp-content/plugins/super-forms/uploads/php/files/616bb5be01abf251e7c062d17cfa9d1e/ronexageki.pdfIn PDF document text
    • http://51-lq.com/userfiles/file///xugivokiladewum.pdfIn PDF document text
    • http://ihvanturizm.com/rsm/files/meguwu.pdfIn PDF document text
    • http://superfishinglewood.com/uploads/files/pipurago.pdfIn PDF document text
    • https://indacphuc.com/wp-content/plugins/super-forms/uploads/php/files/matpgujag6qesnaqejja4uh8h8/xikavodutojaz.pdfIn PDF document text
    • https://omomediacion.com/wp-content/plugins/super-forms/uploads/php/files/b5e200810cd97f80b6528856ce438a57/13463224670.pdfIn PDF document text
    • https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/93c4a54da25756b6168cac3a7aa124f1/ganesefujurigazasona.pdfIn PDF document text
    • http://circuitvietnamcambodge.com/hinhanh/file/45199062623.pdfIn PDF document text
    • http://xedaptap.net/userfiles/file/xivapakulupo.pdfIn PDF document text
    • https://bepcongnghiepphuchung.vn/userfiles/file/20043003626.pdfIn PDF document text
    • https://diversified-nj.com/wp-content/plugins/super-forms/uploads/php/files/d978f6e9085c38ce33e2fe22a76ee165/67626037405.pdfIn PDF document text
    • http://pmteventures.com/clients/5/57/576e8e71b788aac95a268099fab76a3d/File/wevobabuvubejadugasuruzu.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/jtv3o12gde290i0fqf800c38v3/davazazedevuwunaropaloxa.pdfIn PDF document text
    • https://edubox.mn/uploads/users/0/files/84089457829.pdfIn PDF document text
    • https://cashmeredreams.com/wp-content/plugins/super-forms/uploads/php/files/5e354d287a3b4a21d27c2086d39c347e/nesujovenewevajinaw.pdfIn PDF document text
    • http://www.celso.org/download/jowukadotomitananajajajo.pdfIn PDF document text
    • http://mfahk.com/upload/files/88080052370.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/160817100a028d---58453874461.pdfIn PDF document text
    • http://zigzagontwerp.nl/sites/default/files/file/lekikevuwelovozopoguxesov.pdfIn PDF document text
    • http://condosworld.com/abisol1/userfiles/files/6003508941.pdfIn PDF document text
    • http://dexgerm.com/data/file/userfiles/files/kijuporokotutedurazo.pdfIn PDF document text
    • http://nsfeed.com/_UploadFile/Images/file/8633781347.pdfIn PDF document text
    • http://www.esthemed.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160c6838a0e778---biretabilumu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=the+gilded+age+worksheet+answer+keyPDF 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_off0001378f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1378F 10784 bytes
SHA-256: d964b0ec5da35a1f4b6279dc77ed1029ff231ed5a6a4325c0183db528f4f3d12
font_01_sfnt_off00015039.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15039 16956 bytes
SHA-256: 1b413c0b17eef88946a02d08ef1372e14f3006d2eab7fe4a6af8202ecb11e9cc
font_02_sfnt_off00017c54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17C54 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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