Malicious PDF — malware analysis report

Static analysis result for SHA-256 73d1f2eeb2d05ec4…

MALICIOUS

PDF

111.4 KB Created: 2021-04-02 21:33:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 5682711791f9d9b118f4b246ac4d0830 SHA-1: 9962815979b61904a4dc5f4a3625bc31eacc2877 SHA-256: 73d1f2eeb2d05ec461a2a1e2c36d29a2bad3e0f7e99a34f74b7e169edd698445
134 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with one prominent URL pointing to 'baarspo.ru' and another to 'imedo.ru', suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains keywords related to 'Champions league fixtures', likely used as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://baarspo.ru/award?keyword=champions+league+fixtures+2020+20+pdf PDF link annotation
    • http://imedo.ru/katemalawikuvijedexogugkp6og.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368497/normal_605a55556dcdb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476421/normal_600bd7f5ae241.pdfIn PDF document text
    • http://microbestdigitalmeter.xyz/zotozajatebipekufamujx1g9.pdfIn PDF document text
    • http://baykamif.space/45489167449piemb.pdfIn PDF document text
    • http://hangookoil.ru/clair_de_lune_ukulele_tabku4a7.pdfIn PDF document text
    • http://taranif.22web.org/blue_card_application_form_germany.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381289/normal_604e4a7b757ec.pdfIn PDF document text
    • http://pubgmobiie.com/33934435138sl7t7.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/60eee5fe-5aa5-47b2-b02e-387253a5899d/velagegivazeliguzurami.pdfIn PDF document text
    • http://nitumonamejirok.rf.gd/soil_mechanics_lab_manual_das.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52792c9c-1fdd-4d25-8d87-d105bf7dba5b/65796074340.pdfIn PDF document text
    • http://rubujizuz.epizy.com/pathfinder_2e_advanced_players_guide_review.pdfIn PDF document text
    • https://s3.amazonaws.com/safago/dismissal_letter_template_uk_acas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2b74843-83cd-4041-810f-a7e5e656e141/what_is_the_most_rarest_comic_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b26481cd-9173-4727-a42a-8d412e84da52/gunejadufagulizupefer.pdfIn PDF document text
    • http://sujexopeb.rf.gd/80971769394.pdfIn PDF document text
    • http://jovesupegomiz.epizy.com/88379316096.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibebulosaxug/mujebagomafituvisobu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1aa2708-7dc2-4f1f-b633-1f051dfe5161/88996800736.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000169de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x169DE 5704 bytes
SHA-256: 5ef8c9f905a65d7d72aaf3bbbc2818f0c6f70b1af570b55b9f19b68cba030709
font_01_sfnt_off00017d1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17D1A 14868 bytes
SHA-256: 6069c286d39937adbf63a82ff5784cfcbfaeb86d91fc4901985bc03e3add03cd
font_02_sfnt_off0001a8ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A8AD 1736 bytes
SHA-256: 551918360585b1590efa6fd2a215345b2f702067d151a0e4b48cfa7490b57960

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