Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f1f7bb057334f60…

MALICIOUS

PDF

90.2 KB Created: 2021-04-26 20:03:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: eaa04d1dd8b1714e2ffa3756ae2fe554 SHA-1: 613fa5c5c36ba3783d71e1e3da8fd167d5f0d6bd SHA-256: 6f1f7bb057334f60073d4fd520701f64877d20bd2b4fd80049158c2bba3c201d
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF that contains embedded URLs, one of which points to a suspicious domain associated with a lure for 'Leggett and Platt adjustable base instructions'. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicates a link farm on disposable hosting, and ClamAV detected it as Pdf.Phishing.Trojan. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics suggest a phishing or malware distribution attempt, likely leveraging a PDF exploit or social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://kuzutuzo.ru/strik?utm_term=leggett+and+platt+adjustable+base+instructions PDF link annotation
    • https://tojewenegekov.weebly.com/uploads/1/3/4/5/134502344/38e5686b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494877/normal_60684c9fb24bf.pdfIn PDF document text
    • https://cdn.sqhk.co/nawamuzimosu/jdtgehi/23356174628.pdfIn PDF document text
    • https://cdn.sqhk.co/lexelinowe/jeDJijG/fafoxenijuteboruvo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420604/normal_600c6da68a528.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409396/normal_5fdf9cf029d94.pdfIn PDF document text
    • https://cdn.sqhk.co/limiwebu/hghaggX/guardian_tales_7-_3_100.pdfIn PDF document text
    • https://dekedenavit.weebly.com/uploads/1/3/4/6/134612093/vanedozikezisevile.pdfIn PDF document text
    • https://xunitumewotoril.weebly.com/uploads/1/3/4/6/134612341/kekiteteti.pdfIn PDF document text
    • https://cdn.sqhk.co/malevevipali/jjqhggd/gaxibujabebuzenag.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458150/normal_5fdf387db9215.pdfIn PDF document text
    • http://omerkatanalp.com/introduction_to_biology_study_guide_answersl44hd.pdfIn PDF document text
    • http://prolac.ru/rasoxekewobifukajb44ul.pdfIn PDF document text
    • https://cdn.sqhk.co/nixagigad/ihghgh1/siramibibezufatene.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://50c84cdf-c8d4-407e-a307-361b94491100.filesusr.com/ugd/f2656e_503c8025c97245a497c29e78e0f16db7.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad28ddba-6752-4631-8679-f1e3b5c35c4a/how_long_to_write_morning_pages.pdfIn PDF document text
    • https://eb40363d-1d1f-4170-a897-f23f0f433116.filesusr.com/ugd/2a1429_db65ec533ab346d8bfc8fb31ab93c519.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d60754de-6d7b-4a38-87fc-616e68ef572f/pizizenatume.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9d4ef84-6dc7-4dad-8db6-b7e16f221b22/does_apple_tv_3rd_gen_have_disney_plus.pdfIn PDF document text
    • https://fa202315-5cd5-4006-9a99-7c5d4406650e.filesusr.com/ugd/61804c_945ebd1c070c448691567bd5376d2cd9.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd4ff648-0524-4ba5-921d-89664ce08b03/97541598342.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba2003cf-6087-4a5e-82a1-feadf2a3125f/vepajirizonibomuvufaxaxu.pdfIn PDF document text
    • https://41be308f-8a64-4dec-8b30-4937605be974.filesusr.com/ugd/f042fe_0dac0e28491c4bf99c5847dc54de59f0.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000107cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107CB 5400 bytes
SHA-256: 809f7b8c3668e95e4ae28147595a37ce1be020621dfa7e5aa2142d6f9d0d919d
font_01_sfnt_off00011a37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A37 11552 bytes
SHA-256: 489b0387d0d23a9859df6448cb2f2e69fb666b22b0af0e71f936b2b0febdfa2e
font_02_sfnt_off00014063.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14063 18104 bytes
SHA-256: d89398689216fb5e1f47fe6bf0357742bb8e09e6f603055ccdc732c563d0029f

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