Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8194979ddda935e…

MALICIOUS

PDF

75.1 KB Created: 2020-12-31 16:50:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: cb267e6963a57c990fb8dd0bb4d84053 SHA-1: d12a2e0ce3e5a042961e245b5ef457c3f9a54564 SHA-256: a8194979ddda935e1ffd263fb69c6fb41e9c8d8448ea7aa1b962133e7d96e0bd
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or social engineering attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains text related to 'long-life products' and the authoring application, suggesting a lure to a malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafftec.ru/123?utm_term=long-life+products+meaning PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4426063/normal_5f9b34b1b0801.pdfIn PDF document text
    • https://cdn.sqhk.co/kagurase/W22R4VK/fogemexetonupuf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416928/normal_5feb338792dc9.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/wukara/xemilidofugugepon.pdfIn PDF document text
    • https://s3.amazonaws.com/wozowuledij/ark_bronto_platform_saddle_gfi.pdfIn PDF document text
    • https://s3.amazonaws.com/dazovosugev/doturaxivomobitajawapapav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/358e9ed9-3412-45d1-95ba-358310579963/73664023668.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d90f0fad-491e-4215-8a79-2f0d062c935f/37201774575.pdfIn PDF document text
    • https://s3.amazonaws.com/piwanisaj/fasipirubigedodiguw.pdfIn PDF document text
    • https://s3.amazonaws.com/soxukowotomaj/hard_clue_scroll_osrs_full_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wuzalugiseto/16569147269.pdfIn PDF document text
    • https://s3.amazonaws.com/fodose/why_leaving_current_job_best_answer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aef82445-ca1b-4468-a276-622bc2474afb/tv_guide_palm_springs_ca.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b60b979c-3167-4fc1-8dc5-66bced6a50c4/dovelu.pdfIn PDF document text
    • https://s3.amazonaws.com/latufenaw/intestinal_amebiasis_treatment_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/fulazelof/cadillac_cts_wagon_manual_transmission.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_off0000e877.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE877 5448 bytes
SHA-256: ea932730626f638e91e499bfb417c1103a5ce106cbdbe3a36582423ca7b88e18
font_01_sfnt_off0000fafc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAFC 11016 bytes
SHA-256: c7ef4139bfc6c5f5d0b98d3b4fb905f2db16311ea25268ace2e5154bcbd3893a

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