Malicious PDF — malware analysis report

Static analysis result for SHA-256 69acdaf6fa275c06…

MALICIOUS

PDF

85.2 KB Created: 2021-04-29 03:35:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 536c530262596c6392745d270a9b5566 SHA-1: 569cd7a8a8df6b70b9e3c88007facf51926085f7 SHA-256: 69acdaf6fa275c06ce1c6b3c215725edf0b91c45b97d0050fdaddf4ad8d8f4fd
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The sample was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external URIs, including one pointing to 'seumenha.ru', suggesting it functions as a lure to phishing or malware download sites. The presence of urgency language further supports a phishing pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://seumenha.ru/strik?utm_term=graco+snugride+click+connect+35+assembly PDF link annotation
    • https://rominekajamarol.weebly.com/uploads/1/3/4/0/134040464/348620.pdfIn PDF document text
    • http://gejudoxe.mypressonline.com/adverb_of_time_examples.pdfIn PDF document text
    • http://b0xberry.online/is_freya_a_viking_goddessi1w5y.pdfIn PDF document text
    • http://scandisvet.ru/bolt_action_rules_quick_reference_sheetwv2tc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387050/normal_604458f956f6c.pdfIn PDF document text
    • https://sefoxobifi.weebly.com/uploads/1/3/6/0/136093232/d709441d456cf2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456998/normal_5fd8ce16848ce.pdfIn PDF document text
    • http://astrology-personal.online/519298826763n1e3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452157/normal_5ff8ed4156a60.pdfIn PDF document text
    • https://potepivogatofef.weebly.com/uploads/1/3/2/7/132740463/db5fd60dddd27.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463263/normal_603a6d687c117.pdfIn PDF document text
    • http://besefobusim.mypressonline.com/questes_sobre_associao_de_resistores.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/759c62a7-7852-4e44-9d8b-f4a60f5a178b/sunbeam_sgb8901_plate.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80da92c2-3481-4eee-a529-8efa07ee34cf/samsung_ml-2510_compatible_toner_cartridges.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f3a6a41-b036-4307-b191-9b6482f0d5d9/olympus_e-520_lens.pdfIn PDF document text
    • http://wupidusujimi.myartsonline.com/nijuzabuzi.pdfIn PDF document text
    • http://lufiwivumijej.myartsonline.com/xutinija.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_off00010d2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D2C 5884 bytes
SHA-256: ba432c30937538a5e0debfb92c73bca30377ae191af573dfa313f1f7bcab6d0f
font_01_sfnt_off00012124.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12124 11756 bytes
SHA-256: 044008e48cb8234f5ec10e64e3ac229a8143261e7defc1b1e27c6aa9b69b4af3

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