Malicious PDF — malware analysis report

Static analysis result for SHA-256 75f46950530f9e52…

MALICIOUS

PDF

83.2 KB Created: 2021-04-09 09:13:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 99bdc160d3da8a2f46a04d564ca5e0f9 SHA-1: cf390a5c67c9e25b5c627fb7eff709a1fb17b1f9 SHA-256: 75f46950530f9e527303cd1476ba8e0c7ae214ad1f16f7adfed6653bc14abc6a
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 0.9970

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://druttle.ru/strik?utm_term=can+you+buy+your+own+router+for+fios PDF link annotation
    • http://myfoxing.online/vampire_diaries_season_4_episode_1_soundtrack331c1.pdfIn PDF document text
    • http://vovality.club/53293212007cndf3.pdfIn PDF document text
    • http://goworudubilit.iblogger.org/how_to_reset_avr_denon_receiver.pdfIn PDF document text
    • http://idealsit.fun/pojufaayfmn.pdfIn PDF document text
    • http://yachts-4-sale.com/youth_power_i_offense_playbook21ojb.pdfIn PDF document text
    • http://pakizimavom.scienceontheweb.net/fusionner_plusieurs_documents_creator.pdfIn PDF document text
    • http://gomigapujasep.sportsontheweb.net/environment_and_ecology_shankar_ias_book.pdfIn PDF document text
    • http://siteznakomstv69.space/16522961376xxfsj.pdfIn PDF document text
    • http://lidzadva.xyz/charge_of_the_light_brigade_poem_analysist8tkr.pdfIn PDF document text
    • http://geniusenglish.space/sobunozeted5u84l.pdfIn PDF document text
    • http://figuxovutofid.mygamesonline.org/polovtsian_dances_clarinet.pdfIn PDF document text
    • https://diwamelebo.weebly.com/uploads/1/3/4/1/134108813/labugovexugax-veruzorupido.pdfIn PDF document text
    • http://xosikuxevezi.22web.org/79453664974.pdfIn PDF document text
    • https://gazapaxinu.weebly.com/uploads/1/3/4/4/134475358/ca8dd213d76.pdfIn PDF document text
    • http://55571.ru/62498715827ugyz3.pdfIn PDF document text
    • http://kuvenumine.mygamesonline.org/guvafanezuguroninobi.pdfIn PDF document text
    • https://koduxiwarutuj.weebly.com/uploads/1/3/2/7/132740502/ganidewiwukodu.pdfIn PDF document text
    • http://evromotors.net/airodump-_ng_windows_7msvmn.pdfIn PDF document text
    • http://vobalemujumojak.mywebcommunity.org/wonatifugekavijodabe.pdfIn PDF document text
    • https://goruwikok.weebly.com/uploads/1/3/4/7/134740681/7949254.pdfIn PDF document text
    • http://b0xberry.online/batilibusirezikijobabui38db.pdfIn PDF document text
    • https://dojukigefob.weebly.com/uploads/1/3/4/5/134577696/40ac0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bomepexajusopa.epizy.com/alain_passard_cookbook.pdfIn PDF document text
    • http://wufagezigedo.onlinewebshop.net/politeness_strategy_journal.pdfIn PDF document text
    • http://mivurukelino.onlinewebshop.net/atharva_veda_in_telugu.pdfIn PDF document text
    • http://saveluvuwu.rf.gd/ultimate_general_civil_war_strategy_guide.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010885.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10885 4968 bytes
SHA-256: be61331bbb61b98b9fc9e17eb3b43d4ee2e980f6c2db740d2a1c1c8ba54b286a
font_01_sfnt_off00011992.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11992 11012 bytes
SHA-256: e66fee9244a77993fda585384dd36720dc8c9f5298337ef26c672df454bf091e

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