Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4d5955d8cceab0c…

MALICIOUS

PDF

74.8 KB Created: 2021-01-03 03:23:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d2cc8431b650c94b93a40181286033d4 SHA-1: 7a33358552c46b85e9996696392b09237001a232 SHA-256: c4d5955d8cceab0c7fc19926fa8a5231acfba4ee62e7bfcc9ffc79a3f547838b
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a specific detection name indicating it's a phishing trojan. It contains an embedded URL pointing to a suspicious domain, likely intended to trick the user into visiting it. The document body, though heavily obfuscated, suggests a lure related to 'strategic planning powerpoint presentation template'.

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://trafffe.ru/aws?utm_term=strategic+planning+powerpoint+presentation+template
    • https://static.s123-cdn-static.com/uploads/4408187/normal_5fe08752ac68b.pdf
    • https://cdn.sqhk.co/vemonososepa/NF6ib1a/romudigesisixef.pdf
    • https://cdn-cms.f-static.net/uploads/4487647/normal_5fa8793a18dc2.pdf
    • https://static.s123-cdn-static.com/uploads/4488555/normal_5fc396dd4e4ad.pdf
    • https://cdn.sqhk.co/belesobikezi/egdNxig/bounty_hunter_cowboy_theme_tune.pdf
    • https://cdn-cms.f-static.net/uploads/4485927/normal_5fda70e3bb349.pdf
    • https://cdn-cms.f-static.net/uploads/4369772/normal_5fad2ffaaee0c.pdf
    • https://static.s123-cdn-static.com/uploads/4367947/normal_5fe1c77fd8ed7.pdf
    • https://cdn.sqhk.co/moviferu/eRsFgd9/granny_smith_mlp_death.pdf
    • https://cdn-cms.f-static.net/uploads/4369768/normal_5f90dbc899780.pdf
    • https://cdn.sqhk.co/gajerivab/7bhhIKO/52013580203.pdf
    • https://cdn-cms.f-static.net/uploads/4414871/normal_5fdb1684bff50.pdf
    • https://cdn.sqhk.co/sunidoxil/YgglEwQ/84955224371.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/bdd97e80-7542-4a71-8d26-9b5a51f9c811/estados_de_mexico_mas_afectados_por_covid.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_off0000e0b7.bin
8eeffd6e0dede23107acec0fe51232c14f296c539e084924dd105c317f1a3f6b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE0B7 5448 bytes
font_01_sfnt_off0000f33f.bin
558a2872c8e5025a6646a50f9c534dd0a81f53880664833efbe0aa8589de6a55		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF33F 13024 bytes

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