Malicious PDF — malware analysis report

Static analysis result for SHA-256 e22646c746808eda…

MALICIOUS

PDF

79.0 KB Created: 2021-09-08 02:33:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: ce2ff953c1e7750afc9400857430fda8 SHA-1: 424729b62ddaa19caabc3e65f20018f3cd7247b1 SHA-256: e22646c746808eda71ea759867d13c72c62a48bee3837322882690bf5739bb8e
156 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous links pointing to compromised websites and disposable hosting, suggesting a link farm or phishing lure. The PDF structure and embedded URLs are indicative of an attempt to redirect users to malicious content, potentially for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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://tucsonhomewindowtint.com/wp-content/plugins/super-forms/uploads/php/files/76193d2439918e25e1ee4116234f11b1/negefogonudilos.pdf In PDF document text
    • http://mackielaw.net/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/19881241607.pdfIn PDF document text
    • http://pokebarslo.com/uploads/files/badipevimadufizusukusuri.pdfIn PDF document text
    • https://yourtuscanyguide.com/wp-content/plugins/super-forms/uploads/php/files/ogc1qr72k5j0kq2cpp5dqd9at1/36754704942.pdfIn PDF document text
    • http://www.patricktennis.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a9712e945fd---64160637149.pdfIn PDF document text
    • http://brandnewgoods.net/userfiles/file/94675877767.pdfIn PDF document text
    • http://www.caslyn.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1609ed8c4998b8---xisoboji.pdfIn PDF document text
    • http://www.melloecastro.com/wp-content/plugins/formcraft/file-upload/server/content/files/160719079bc5cc---vagilarabeg.pdfIn PDF document text
    • http://mprime.net/ckfinder/userfiles/files/xoderuvazebafanuxezaraxap.pdfIn PDF document text
    • http://whs1963.com/clients/7/75/758a827d59fb1c2827eec60421ffdc22/File/2880874226.pdfIn PDF document text
    • http://winhazel.com/indigo/ckfinder/userfiles/files/gamalapibowiribaden.pdfIn PDF document text
    • https://eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/35396377808.pdfIn PDF document text
    • http://ohmamakitchen.com/uploads/files/20511368118.pdfIn PDF document text
    • https://weeb.nu/userfiles/file/ninipugi.pdfIn PDF document text
    • https://militarynetwork.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16126afe570ef8---fozisigikomugiv.pdfIn PDF document text
    • https://sahyadrisevasanstha.in/userfiles/file/7123859270.pdfIn PDF document text
    • http://www.deco-interieure.com/userfiles/file/14487889126.pdfIn PDF document text
    • http://cateringkieuan.com/uploads/userfiles/file/pamafutumelofofiz.pdfIn PDF document text
    • https://www.etbsupplies.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af384334f53---25190752629.pdfIn PDF document text
    • https://doitsolutions.co/wp-content/plugins/super-forms/uploads/php/files/91c500aafd35ba3cf38ca02cf49df95e/69008397905.pdfIn PDF document text
    • https://praktijk.zorglink.nl/ckfinder/userfiles/files/gunoliduvovefojidun.pdfIn PDF document text
    • http://praguynakorn.com/praguynakorn/picture/datapro/files/95968177792.pdfIn PDF document text
    • https://www.qbuildsoftware.com/wp-content/plugins/super-forms/uploads/php/files/8e25d29c7e4fed32f12c336eb921b08d/bofapopores.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=practicas+de+electronica+analogica+pdfPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC28 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e43f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE43F 10796 bytes
SHA-256: 89c57d4f2ef4a624e0a2e9d426775be16b0b0f507213cfb975656648ce827072
font_02_sfnt_off0000fd00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD00 19376 bytes
SHA-256: 1d478db86b6a7b2edecb8fcf4184c05c664f96e75118c47dd5e584b1f47818f7

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