Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fbc2678df7ab3c7…

MALICIOUS

PDF

83.1 KB Created: 2021-03-16 02:30:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 7fc5a419fab2c442c82f35254d6d31f7 SHA-1: a244c5b58dfd96c62fddcaa2c7959cb721917cd8 SHA-256: 9fbc2678df7ab3c773b9920de6ad26d75c211058c96c150c1ca968287868fcec
126 Risk Score

Malware Insights

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

The PDF document contains numerous links to disposable domains, many of which are hosted on link farms, suggesting a phishing or scam attempt. The document body text is obfuscated but appears to be a lure related to a search query. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution via embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • 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 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://mezovuduw.ru/strik?utm_term=who+is+coachmen+rv+owned+by PDF link annotation
    • https://cdn.sqhk.co/foropogajag/kidv7ZS/zokisotubomizo.pdfIn PDF document text
    • https://cdn.sqhk.co/zimajigon/gfgdmCq/kasefudimirokiresijonutu.pdfIn PDF document text
    • http://insurancesouk.com/62109537391p5lv3.pdfIn PDF document text
    • http://vurujupafowutox.mypressonline.com/vufamuja.pdfIn PDF document text
    • http://mivetys.xyz/how_to_use_hisense_aircon_remote4i2xp.pdfIn PDF document text
    • http://xemizawufogutuf.scienceontheweb.net/20439407045.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454546/normal_5fd0f2c10d092.pdfIn PDF document text
    • http://alsamcctv.com/28627395346yy8z0.pdfIn PDF document text
    • http://iglivesupportteam.com/todivalomegekedijoxtvs0u.pdfIn PDF document text
    • http://egosikenclub.com/feeling_alone_picture_quotesru3x2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369909/normal_5fc62cb79eabb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450040/normal_5feffb7d90444.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380210/normal_602a751351a62.pdfIn PDF document text
    • http://freshmind.net/suxowafosemasimex8jya9.pdfIn PDF document text
    • http://skywonder.space/sociological_imagination_definenertw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/caa27328-482a-42cd-8f07-356f4eeb608c/malukupagafijujip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08c55679-769e-457e-b676-c0bb85b0b86c/58931685038.pdfIn PDF document text
    • http://xoxekojut.onlinewebshop.net/bodyboss_exercises.pdfIn PDF document text
    • http://xinifaduzinuvu.onlinewebshop.net/paxejevowuzonalamegabavid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55f73e42-da6b-4d8e-92e6-c447dab7d5d7/native_american_beaver_symbol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d981b129-92b0-4327-86a7-87c7d0cb734a/kufipezavakega.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bebb6933-9cbd-41dd-9be2-bad6eb45edf2/xakogufebamitufefoje.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_off00010656.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10656 5552 bytes
SHA-256: 29136c6f79f0820c0ff3a7c4c462a5fcdde0d78830908c8bc0ed4091521ee756
font_01_sfnt_off0001192d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1192D 11016 bytes
SHA-256: 46ee05f18a6dc3f226fe13b9f74c00323d372736cad44edc4d429ba01b19918e

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