Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d9be6fd175eee25…

MALICIOUS

PDF

72.3 KB Created: 2021-01-07 05:03:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: bf185348c402b7c37fc3707c4e55235a SHA-1: 2ecc5b9db832d16079dc1f0369a54a372524bb2e SHA-256: 3d9be6fd175eee25bab2eedb26160ac3bd8bc2e1c98f895f6f6b9639ffc1dc03
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. An external URI pointing to 'trafffi.ru' was extracted, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains text related to 'law of the lord bible verse', which is likely a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafffi.ru/123?utm_term=law+of+the+lord+bible+verse PDF link annotation
    • https://cdn.sqhk.co/bewewojiwo/cGL1icg/56425771041.pdfIn PDF document text
    • https://cdn.sqhk.co/vipujitebiki/hdRvzrj/woodwork_courses_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/gofelaxes/hgQhc3K/17472794905.pdfIn PDF document text
    • https://cdn.sqhk.co/fasixazijaz/qgezGnr/weed_killer_spray_for_lawns.pdfIn PDF document text
    • https://zudizobi.weebly.com/uploads/1/3/4/8/134860565/a48754d0995d2f.pdfIn PDF document text
    • https://mijibetifud.weebly.com/uploads/1/3/4/6/134653630/811152.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388420/normal_5fc7e4d1f0ad9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454161/normal_5fba9de02601b.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/susopuzupure/tepuxijunipadesororepijel.pdfIn PDF document text
    • https://s3.amazonaws.com/sizabo/gravity_s_rainbow_character_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/jeduzizonox/formas_de_maltrato_psicologico_a_la_mujer.pdfIn PDF document text
    • https://s3.amazonaws.com/jozetej/cakewalk_sonar_8_producer_full_version.pdfIn PDF document text
    • https://s3.amazonaws.com/nelizenejakarug/lebuzisuzepajuti.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_off0000e0d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0D4 5228 bytes
SHA-256: d17f00b0ed786bfe26cbe7c6f2315502ca8576e4e2066800f4a42890d9e89e8a
font_01_sfnt_off0000f2b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2B1 9960 bytes
SHA-256: c19b79c343c410c7929d35fbc606d1f818a85e24ffb755bb21cfb40f1a377aa7

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