Malicious PDF — malware analysis report

Static analysis result for SHA-256 c94cbe8b6ac051a2…

MALICIOUS

PDF

67.4 KB Created: 2020-11-23 23:15:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 31c06e638526afd64f18f0d579a79be9 SHA-1: 53a84221b247c8fc85fec288f6dba232339a8b23 SHA-256: c94cbe8b6ac051a22df265abb5225d30aa3ce10fd4286ca6097f299cc0de59f8
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ClamAV and an ML classifier. It contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to 'Les promesses de la bible pdf'. No scripts were extracted, but the presence of an external URI and the overall detection profile indicate a phishing or malicious content delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffset.ru/strik?utm_term=les+promesses+de+la+bible+pdf
    • https://tolixolosunep.weebly.com/uploads/1/3/4/4/134403343/532419.pdf
    • https://cdn-cms.f-static.net/uploads/4475380/normal_5fa5bcefd5b2c.pdf
    • https://cdn-cms.f-static.net/uploads/4375894/normal_5fa8932077427.pdf
    • https://votawaxamudogop.weebly.com/uploads/1/3/4/4/134400347/2060645.pdf
    • https://cdn-cms.f-static.net/uploads/4390071/normal_5f9331ebdf1bc.pdf
    • https://cdn-cms.f-static.net/uploads/4387706/normal_5f9e48e89b959.pdf
    • https://cdn-cms.f-static.net/uploads/4381980/normal_5f8fce81630b9.pdf
    • https://bivovipolever.weebly.com/uploads/1/3/4/3/134347360/3391757.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/bibejovixapis/9503224175.pdf
    • https://s3.amazonaws.com/nezanurugega/lie_nielsen_honing_guide_instructions.pdf
    • https://s3.amazonaws.com/ruzumeb/mario_maker_2_apk.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_off0000c86b.bin
0ba158c85b0ae7d83563dc3b392ad0bd602542875974d12cf1f70723b9122a90		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC86B 5268 bytes
font_01_sfnt_off0000da34.bin
28cb3d2231890e27f9486da8473dc43f94d37d3ae2fe689406223c714ee51276		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDA34 11856 bytes

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