Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6d720bcbb0a3e07…

MALICIOUS

PDF

70.1 KB Created: 2020-11-12 23:14:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1ee3ce770a34190ef4c5695ab6437f6d SHA-1: 9ce0115e3d0e6e625dda90c2e225686c1225de62 SHA-256: d6d720bcbb0a3e073a5ab9c27b5c84451fa5873bb7d12900afe367f66962ffdb
112 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The presence of an embedded URI pointing to 'traffset.ru' suggests a phishing or malware distribution attempt. The heuristic 'SE_URGENCY_LURE' and 'SE_INVOICE_LURE' further support the phishing pretext, indicating the document likely uses urgent language or a fake invoice to trick the user into clicking the malicious link.

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
  • 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
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://traffset.ru/strik?utm_term=transit+cami%25C3%25A3o+gumtree
    • https://cdn-cms.f-static.net/uploads/4382197/normal_5fa737d7bdbf2.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/213af1a0-2a37-4862-8bf5-7dc2b8202624/o_livro_de_melquisedeque.pdf
    • https://s3.amazonaws.com/punagilelabon/5780233469.pdf
    • https://s3.amazonaws.com/tetenifeme/96228223599.pdf
    • https://s3.amazonaws.com/defipedibe/gta_3_cheats_ps4.pdf
    • https://uploads.strikinglycdn.com/files/471e4ba3-9a43-4844-9589-9b1c24e63731/819247468.pdf
    • https://s3.amazonaws.com/fikuvine/nuit_d_etoiles_debussy_ipa.pdf
    • https://uploads.strikinglycdn.com/files/3bd5ae3e-879d-466e-95e6-f974b22be330/fejetokuraxenuxa.pdf
    • https://s3.amazonaws.com/jarawaxanivu/adult_belly_button_hernia_surgery.pdf
    • https://s3.amazonaws.com/zetituri/writing_center_umd.pdf
    • https://s3.amazonaws.com/wumodukubaru/lg_wm3470hva_manual.pdf
    • https://s3.amazonaws.com/wewuxuviwar/xexomijaxujimunak.pdf
    • https://uploads.strikinglycdn.com/files/8712004a-1798-4b9c-bb3a-21df3bc17903/20026666951.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ca84.bin
0a5c20fb88cd80c54faefd57175279d3f5412273dc13727f9144f0789ff095e8
pdf-font-stream PDF embedded font (sfnt) at offset 0xCA84 5352 bytes
font_01_sfnt_off0000dc09.bin
846ca92e31180e1d197f705217a20b418c8bcfbfa471b2bfb2676a393293fc55
pdf-font-stream PDF embedded font (sfnt) at offset 0xDC09 17332 bytes