Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3e6ddd07e11540a…

MALICIOUS

PDF

67.1 KB Created: 2021-02-11 08:16:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 63f717f2fe32a1de7add989e4aeb2fd8 SHA-1: 2079bc6f0cede7471997ba30bb1e53f9067bce57 SHA-256: b3e6ddd07e11540a5c6add42fa05685b0e611079af362e24abf87ea391e4e3b6
96 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. 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 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/aws?utm_term=amerex+fire+extinguisher+msds+sheet PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4458622/normal_60220d00dcafa.pdfIn PDF document text
    • https://milonotupilo.weebly.com/uploads/1/3/5/3/135347339/benefolikakilu_xefasi_dekisot.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501042/normal_5ff2a2e133305.pdfIn PDF document text
    • https://cdn.sqhk.co/zofizitene/jcidheB/gallery_furniture_houston_reviews.pdfIn PDF document text
    • https://cdn.sqhk.co/saboxiwago/gASghhf/stickman_fight_the_game_mobile_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367633/normal_60137f6f0e826.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371791/normal_600989918c201.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406170/normal_5ffa1104e7470.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vuvodulewuxewe.epizy.com/piano_chords_sheet_music_free.pdfIn PDF document text
    • https://s3.amazonaws.com/nunakixuma/cerebrovascular_event.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_off0000cae4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAE4 5136 bytes
SHA-256: 805e081ed923b61e02141b5ea1667aaf2d0bc4702b6fb6af2e65708bfff47187
font_01_sfnt_off0000dc3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC3E 10468 bytes
SHA-256: 04e090db4ccd45022fc71b40e450631eb1c879714bbfa83eb25b3a5bd9c0eb51