Malicious PDF — malware analysis report

Static analysis result for SHA-256 1192cea030d1dc01…

MALICIOUS

PDF

66.9 KB Created: 2020-12-22 15:17:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 293ff1b7ae3b730c9f7b73e1658c6070 SHA-1: 19502fe77a9c614408fd90093edd5cc870fc9f4e SHA-256: 1192cea030d1dc013002df5971a68ee149b5e9dca76704a9ec1d5fb668ab1ee6
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a high ML score and ClamAV detection as a phishing trojan. It contains numerous embedded URLs, with one prominent URL pointing to 'trafffi.ru', suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains text related to a 'castle game trophy guide', which likely serves as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/strik?utm_term=the+castle+game+trophy+guide PDF link annotation
    • https://revafabeku.weebly.com/uploads/1/3/4/7/134708131/papexukenufe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422382/normal_5f98c3fc997a5.pdfIn PDF document text
    • https://jedidaril.weebly.com/uploads/1/3/4/6/134687024/lekonufetin.pdfIn PDF document text
    • https://dekavodo.weebly.com/uploads/1/3/4/4/134438155/387077.pdfIn PDF document text
    • https://jatolesaz.weebly.com/uploads/1/3/4/6/134645106/fisuguziwolabez-bevevatajepi-visaxu-mekole.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415046/normal_5fad333b86418.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379054/normal_5f9ea74f44ba4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393908/normal_5fa7b225e5548.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390323/normal_5fc759cfd285e.pdfIn PDF document text
    • https://dufevirefat.weebly.com/uploads/1/3/1/4/131438490/juxaponop_tinet.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/kovilowab/30244656719.pdfIn PDF document text
    • https://s3.amazonaws.com/punagilelabon/dmarc_office_365_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/57473779826.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/29995433625.pdfIn PDF document text
    • https://s3.amazonaws.com/bisapovepizaj/tesco_careers_questionnaire_answers_2019.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_off0000c89e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC89E 5536 bytes
SHA-256: 5500a13a96ec8d0e0980fc02fdeb7401e555ff5513d8429d51ab7d701c56ad99
font_01_sfnt_off0000db4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB4C 10496 bytes
SHA-256: 2643886f0d42b055d9c3d8e93d1756c05af2436d19df732c5e578dc3b8fea03b

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