Malicious PDF — malware analysis report

Static analysis result for SHA-256 b892f88947a3907d…

MALICIOUS

PDF

66.9 KB Created: 2021-02-10 09:56:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 4c06c5d0177fc3091799f7117aadb228 SHA-1: a2e0ae270225ca5436073231bf8b13156eb39dd7 SHA-256: b892f88947a3907d729798aa94d39d8830c4a46babbaf877fd8a761124c01599
96 Risk Score

Malware Insights

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

The ML classifier and ClamAV detection strongly indicate maliciousness. The PDF contains an embedded URI pointing to a suspicious domain, likely used to host a malicious payload or redirect to a phishing site. The document body, though heavily garbled, suggests a lure related to a 'dictionary french persian free' download, aligning with phishing or malware distribution tactics.

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://jottigo.ru/aws?utm_term=dictionary+french+persian+free PDF link annotation
    • https://musevurimimurom.weebly.com/uploads/1/3/4/7/134711136/906253.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406481/normal_6004417f9ac26.pdfIn PDF document text
    • https://cdn.sqhk.co/bopelara/JgiYqgc/rifapinoxuvufigebesavo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373755/normal_6014d009e85f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372377/normal_5fd391d708d9e.pdfIn PDF document text
    • https://cdn.sqhk.co/keridola/haiehbC/vector_full_game_download_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/jidulopavoji/Lifjgic/youtube_life_is_strange_2_soundtrack.pdfIn PDF document text
    • https://dopovubejaxow.weebly.com/uploads/1/3/4/0/134017692/8249889.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370071/normal_5fdd5d7551a81.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487186/normal_5fdd3a8600a22.pdfIn PDF document text
    • https://cdn.sqhk.co/wadelovelo/nigSopy/super_bomberman_2_snes.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446034/normal_5fe45bb5d1da9.pdfIn PDF document text
    • https://cdn.sqhk.co/vetejevibas/2hcjhhd/best_buy_ps5_digital.pdfIn PDF document text
    • https://pubodepilup.weebly.com/uploads/1/3/1/4/131406337/3026821.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408858/normal_5fe1ea052ca0e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450427/normal_5ffce2f283c26.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/mesotodimus/cakewalk_vst_adapter_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wisuw/27935536855.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_off0000c86f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC86F 5172 bytes
SHA-256: 82af469f7ad102c3cf2a6c2a83351cf96710ed1e3173db764aa1c1cdec0968c9
font_01_sfnt_off0000da18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA18 10824 bytes
SHA-256: a7a3901fb6c9bcb1b40220cb79622ebc06f52845f33338d1d9e737fc12703265

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