Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d25d7b7a5184c10…

MALICIOUS

PDF

76.2 KB Created: 2021-03-14 13:13:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 2cbfd3f25445356f8f4f673b4e242626 SHA-1: 52efbe2569e09d7e5fe69b6828a446feca5320b4 SHA-256: 0d25d7b7a5184c10e8bda1c0dd2f8dd4ada1a3d6a6a5c164caa1995aa28c5d6d
126 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://fokemale.ru/strik?utm_term=jumping+the+broom+movie PDF link annotation
    • http://manekobe.22web.org/62960012045.pdfIn PDF document text
    • https://baxelawinojiw.weebly.com/uploads/1/3/4/3/134333718/wodojoteg.pdfIn PDF document text
    • http://sujifanuv.22web.org/latex_fancybox.pdfIn PDF document text
    • https://cdn.sqhk.co/dejuxafe/diaVOjM/adblocker_ultimate_browser_mod.pdfIn PDF document text
    • http://nowatora.22web.org/tijixa.pdfIn PDF document text
    • https://fereganew.weebly.com/uploads/1/3/4/1/134131887/kugatuvuno-radigabas-nupobi-wifefupebizo.pdfIn PDF document text
    • https://romubavopu.weebly.com/uploads/1/3/4/8/134884942/dab0366f54.pdfIn PDF document text
    • https://cdn.sqhk.co/govuzupikiwe/Difieij/98082348637.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/duzexefemosaxe/zebco_33_classic_manual.pdfIn PDF document text
    • http://pofiwun.rf.gd/bulleya_sultan_instrumental_ringtone.pdfIn PDF document text
    • http://detanavun.rf.gd/psalm_23_rod_and_staff_meaning.pdfIn PDF document text
    • https://ea64ff4c-51e6-4efc-8cc1-399682447901.filesusr.com/ugd/961f18_9804afac1e0f4c3797d62be7023e8380.pdf?index=trueIn PDF document text
    • https://5ee0d2ad-6486-47ce-ab7d-0e7b2bae4193.filesusr.com/ugd/bc0d1e_41091adfad834b31ab4bfb362ec0193b.pdf?index=trueIn PDF document text
    • http://jexowenotagimiv.rf.gd/singapore_math_workbook_1a.pdfIn PDF document text
    • https://s3.amazonaws.com/satuja/how_do_mule_deer_survive_winter.pdfIn PDF document text
    • http://zebigibozudival.epizy.com/million_dollar_habits_book_review.pdfIn PDF document text
    • https://83d7d1d1-3661-4158-a2cc-78aa4aa39d08.filesusr.com/ugd/163759_f63a186707b1435389c9767bee201ac2.pdf?index=trueIn PDF document text
    • http://vevojadiren.epizy.com/72664591502.pdfIn PDF document text
    • https://s3.amazonaws.com/kudowo/second_variety_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/wurivuve/jamujotitizumot.pdfIn PDF document text
    • http://deravamosu.rf.gd/89535709707.pdfIn 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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC9F 5000 bytes
SHA-256: bb0af1ef195759d6f1f7aab90ce9454dda2befeaf0726c758f2907fa396e15b8
font_01_sfnt_off0000fd82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD82 11220 bytes
SHA-256: b719fb9756041d43d5f8bd1857716f27c213c1153c6e2535b09a62a8509da67c

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