Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a111ae256b2a83c…

MALICIOUS

PDF

132.7 KB Created: 2021-03-31 22:41:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 957e8a2755c69fab9daf4a16ccfa8e56 SHA-1: b7cfe85af179f33985fb590b9c07362102473c20 SHA-256: 0a111ae256b2a83ca354c035284fb015e50954fe3830daf4dab05b20e58ed087
286 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.007 JavaScript

This PDF file exhibits characteristics of a phishing lure, specifically impersonating Facebook to trick users into installing a browser extension or update. The document contains numerous external links, many pointing to disposable hosting, suggesting a link farm or redirector infrastructure. While no scripts were directly extracted, the presence of embedded URLs and the 'Browser extension / update installation lure' heuristic indicate a strong intent to deceive the user into executing further malicious actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9745

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://patawera.weebly.com/uploads/1/3/4/1/134131312/gixaxekegerebizum.pdf.
  • 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
  • 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://gimoguvi.ru/wix?keyword=unblocked+movies+777 PDF link annotation
    • http://wavujilipazi.22web.org/alliance_leveling_guide_warmane.pdfIn PDF document text
    • https://patawera.weebly.com/uploads/1/3/4/1/134131312/gixaxekegerebizum.pdfIn PDF document text
    • https://vukuxonujifated.weebly.com/uploads/1/3/1/1/131164545/88b3f749b.pdfIn PDF document text
    • https://filokizufotol.weebly.com/uploads/1/3/4/4/134455434/migetexedosen.pdfIn PDF document text
    • https://mepagalupotope.weebly.com/uploads/1/3/4/2/134265457/mozutesupakuvaje.pdfIn PDF document text
    • https://tidosivapozagul.weebly.com/uploads/1/3/4/3/134390518/runir-baredegunala.pdfIn PDF document text
    • https://tebukebodo.weebly.com/uploads/1/3/1/3/131381901/lezorabasamaloj.pdfIn PDF document text
    • https://garigewofunem.weebly.com/uploads/1/3/4/3/134314314/daxugijowita-mimetitivosape-bewotekede-lakanogif.pdfIn PDF document text
    • https://xojurumute.weebly.com/uploads/1/3/5/3/135328527/tujuxexunane_kitiz.pdfIn PDF document text
    • https://kavivafome.weebly.com/uploads/1/3/2/7/132740637/7085702.pdfIn PDF document text
    • https://vejefoxebeses.weebly.com/uploads/1/3/4/8/134860837/8c3cb459d6e3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/fuzafuzeruwit/john_deere_gator_owners_manual_free_download.pdfIn PDF document text
    • http://vibomogizago.rf.gd/millermatic_130_xp_for_sale.pdfIn PDF document text
    • http://nisinukodepafix.rf.gd/believer_guitar_chords.pdfIn PDF document text
    • http://nepogewapiw.epizy.com/16640115240.pdfIn PDF document text
    • https://s3.amazonaws.com/jejulurowev/45820392977.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/71289967359.pdfIn PDF document text
    • http://fowosirid.rf.gd/takeweba.pdfIn PDF document text
    • https://23751d96-d7b3-42ca-b8ca-e459b671ea95.filesusr.com/ugd/7de994_02400c3b434c444db3dee1a26fa9c4f0.pdf?index=trueIn PDF document text
    • http://dugipiwem.epizy.com/tazetutiv.pdfIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/510768702.pdfIn PDF document text
    • http://jedigosegukigif.rf.gd/84009732340.pdfIn PDF document text
    • https://7f993087-45f6-41f4-96e5-9dcaca18fb91.filesusr.com/ugd/9a92dd_bf66e2121e79410eb42d8cef10327c56.pdf?index=trueIn PDF document text
    • http://pinezininefos.epizy.com/libek.pdfIn PDF document text
    • https://711920be-b761-4f0e-a604-762b26663b16.filesusr.com/ugd/ffcbea_798dfad5f861422da8ce3904126e616c.pdf?index=trueIn PDF document text
    • https://f635e5d9-31b1-4f19-b758-7a623be10181.filesusr.com/ugd/6cf0f5_ae5e5155f7034efabd81994402749948.pdf?index=trueIn 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://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001854a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1854A 10784 bytes
SHA-256: e629cefb2eb7afdb58c4e48dc11ad9a2a5a23ccb4e76e0b24208cf3f42559576
font_01_sfnt_off0001a771.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A771 4824 bytes
SHA-256: 2e6ac70bf2d022a68c3310472fc4ff189e3f36a9edc5c71746840da549f7cafb
font_02_sfnt_off0001b7c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B7C1 11876 bytes
SHA-256: 1922572b089d5d11cdaf5c3401095194aa2c6b6f7ee25cbc94b07d9ca7050cff
font_03_sfnt_off0001e06a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E06A 16096 bytes
SHA-256: 19ece852f40bc3924311adfba3d43e092a25194c6d3b6e3d178a0c38e0302bb2
font_04_sfnt_off0001f541.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F541 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230