Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb64b18e8703398d…

MALICIOUS

PDF

66.1 KB Created: 2020-11-22 13:00:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1a4cbcd79c485109c776172a1ee289fd SHA-1: 587d1410d70bc19acaeba9298df034791a301991 SHA-256: cb64b18e8703398d337327a0d810e3dd32aed8c9f31669997403be586628ca11
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that directs users to a phishing site disguised as a Shoprite gift card balance checker. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for credential harvesting or financial fraud. No scripts were extracted, but the PDF structure and embedded URI are sufficient indicators of a phishing attack.

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://traffnew.ru/123?utm_term=shoprite+gift+cards+balance
    • https://cdn-cms.f-static.net/uploads/4458615/normal_5fa725485af9b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/davolazupivowi/snakes_in_pahrump_nv.pdf
    • https://s3.amazonaws.com/pazifetanegapu/anomalias_gastrointestinales_congenitas.pdf
    • https://s3.amazonaws.com/tesasubawalozan/titleist_910_d2_driver_review.pdf
    • https://s3.amazonaws.com/zidenigad/42947868497.pdf
    • https://s3.amazonaws.com/levumoduf/67339775224.pdf
    • https://s3.amazonaws.com/mutirexa/33012300783.pdf
    • https://uploads.strikinglycdn.com/files/2805891c-4aef-4835-91ce-95a762fae3c9/40381361969.pdf
    • https://uploads.strikinglycdn.com/files/52bd015e-f442-45c5-97b3-8250b1d10453/zadefew.pdf
    • https://s3.amazonaws.com/juvuraguvutoxif/the_photograph_movie_2020_plot.pdf
    • https://s3.amazonaws.com/dazuxujepov/37603632658.pdf
    • https://s3.amazonaws.com/medetopuwofetut/mavema.pdf
    • https://s3.amazonaws.com/guxosa/antonyms_worksheet_for_grade_5.pdf
    • https://s3.amazonaws.com/sefipa/47048157330.pdf
    • https://s3.amazonaws.com/ratixifo/51179862932.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_off0000c2e3.bin
804ea89364159c45ece8a4e64870a895cdb5fc05125a738da70773c0b33fe740		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC2E3 5660 bytes
font_01_sfnt_off0000d623.bin
5ff51d75716ad1ea0b734056c8400f714a496ac6235b833bf909a337246a1b4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD623 10972 bytes

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