Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d4e495da20c9051…

MALICIOUS

PDF

69.7 KB Created: 2020-11-18 20:49:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: d774bd6c3ad14d90414b831d550df7f1 SHA-1: 5c3ce3b380e8e7b799b062df19e2d45a99883368 SHA-256: 1d4e495da20c9051ee187aed1545be09e2f171d5bcbe2785f1f1cc982896bf03
104 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses an urgency-based lure. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • 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://trafffi.ru/strik?utm_term=oia+track+and+field PDF link annotation
    • https://sazimopugis.weebly.com/uploads/1/3/4/6/134611647/4218829.pdfIn PDF document text
    • https://fapezadedafax.weebly.com/uploads/1/3/4/6/134609176/29c21025c8664.pdfIn PDF document text
    • https://wemibevufiwoseb.weebly.com/uploads/1/3/0/8/130813314/pobaxaxosaxuvi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482618/normal_5fb562a5358fd.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/23b65ac7-1516-4e84-a8c8-c49727eee4ee/chemical_engineer_handbook_free_down.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93f071ed-b13b-4710-8196-d839fdace54e/61370067988.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f96cf57-088f-4156-8417-1d61c52bc405/wood_machinist_tool_chest_hardware.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54976814-52b2-4afa-8c90-36b4f871d5ff/ganasute.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd03e9aa-e8be-4297-aca6-aa74355e9a5a/kanovomirisomibimojiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18f81597-087b-40e6-952c-b86fe02761f0/katutaritunotawe.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_off0000d26b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD26B 4928 bytes
SHA-256: 38daacf10d1fc780fac11e005012b7b16c74b1a21fceaced0a83bfba53152dbc
font_01_sfnt_off0000e345.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE345 12544 bytes
SHA-256: 796ac46cc39660163f24bf9c4e521320b534015bc0a923d52806e7340887a6a9