Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1599195436f8f2f…

MALICIOUS

PDF

66.1 KB Created: 2020-11-14 01:59:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 291619b1058928c162b7761f343a6fa5 SHA-1: d3d091012799a0cf83605a207e9bc1546df8b100 SHA-256: e1599195436f8f2fb8357e7dbf33256fa700f0a31c67fbd4f7fe6343b973dbff
136 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'traffset.ru' suggests a phishing or malware distribution attempt. The 'SE_LOLBIN_RUN_COMMAND' heuristic further supports the malicious nature by indicating suspicious command execution patterns within the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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/aws?utm_term=glast+heim+devil+wing+quest+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4416932/normal_5fa6547540cd7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365600/normal_5f8709b36ee47.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365540/normal_5f8a1a937853b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367905/normal_5f8756f837798.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365563/normal_5fa61faaa07c4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/petubapizo/1664182771.pdfIn PDF document text
    • https://s3.amazonaws.com/rizijubovapuk/anti_money_laundering_training.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/mugisijorivukikom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ade03901-f1e2-45bc-a6dc-7ab42d34253c/36450261916.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_off0000c561.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC561 5452 bytes
SHA-256: fa308cdc35d9cb8a7250a932daa75438939d8aabae89dff7027994b61469fc0b
font_01_sfnt_off0000d7d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7D6 10692 bytes
SHA-256: e15be58884308212a681aac5d3e537b3d1f48ab196ba5f2a844f70146f4abc8b

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