Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e39073dfb91c37a…

MALICIOUS

PDF

75.6 KB Created: 2021-07-14 07:31:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: dcac0fba96181bc94eb97908cd4dbf02 SHA-1: 649f93a11502c3dc569b5651bfc7d4bb405d383c SHA-256: 2e39073dfb91c37ac1e196d13ab928741da5b353053607a94317d6dcea226779
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document exhibits characteristics of an advance-fee scam, using lottery or prize language combined with parcel delivery requirements. While no scripts were explicitly extracted, the ML classifier and ClamAV detection strongly indicate malicious intent, likely involving embedded exploits or malicious links. The presence of external URIs suggests potential redirection or payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7703

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
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://feedproxy.google.com/~r/razvivatel/yapz/~3/gOBB6uaVNRA/square?utm_term=properties+of+pseudohalogens
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ee4746e7148d06bc719567/1626228551010/37203628295.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60edbf04e55429721e1da81b/1626193668992/mhw_iceborne_best_charge_blade.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec7da3ef188817f7e0d63e/1626111395679/the_pathless_ps5_review.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c68f.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC68F 16792 bytes
font_01_sfnt_off0000dea6.bin
f99d3ed8269cdb0481dcc7fa038045926e772bf7a604b94bb25a5a715cfbd8a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDEA6 10880 bytes
font_02_sfnt_off0000f77a.bin
fa875c9d2b55074b244a1423c922554908a77c7b237f839ff06c758143cc4538		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF77A 16628 bytes

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