Malicious PDF — malware analysis report

Static analysis result for SHA-256 93cee407863a7e13…

MALICIOUS

PDF

72.0 KB Created: 2021-02-19 22:24:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: b36e186f8dca0e079a4f6e01bef48d67 SHA-1: 7894aafa68104e3a02738dc3b1e96de14cf984e0 SHA-256: 93cee407863a7e139af4a8e76926ba328b526e30d402586a26a5d12fd39a1aad
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to deceive the user into clicking it. The document body, though heavily obfuscated, appears to be a lure related to search terms, further supporting a phishing or social engineering 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://leonvi.ru/aws?utm_term=raymond+carver+poems+happiness PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4474462/normal_6018db681576a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372967/normal_5fd264b811742.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388427/normal_5ffc2705cf97f.pdfIn PDF document text
    • https://borerejo.weebly.com/uploads/1/3/4/0/134040615/3e2b89b544e2a21.pdfIn PDF document text
    • http://trylait.pro/sunumuresiwufijakawesi81cg0.pdfIn PDF document text
    • https://bizavurodetilu.weebly.com/uploads/1/3/4/3/134391156/60bf5eb7d87831.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460950/normal_5ffc67134653a.pdfIn PDF document text
    • https://cdn.sqhk.co/noxuwitide/YpFoNQF/infection_rate_germany.pdfIn PDF document text
    • http://apelsins.space/harris_jayaraj_telugu_songs_naa_songs_downloada87u0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411250/normal_5fe0d560d138d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393188/normal_602906209cc36.pdfIn PDF document text
    • https://rikelakejif.weebly.com/uploads/1/3/4/8/134885243/zopigibo.pdfIn PDF document text
    • http://letxxnx.org/how_to_reset_dimplex_fireplace_remote1xw9i.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416322/normal_5fc7eea5bf3c7.pdfIn PDF document text
    • http://intekzafast.online/cis-_trans_isomerization_worksheet_answersiofmd.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/pevuwarobuvowa/88940462727.pdfIn PDF document text
    • https://s3.amazonaws.com/bitajemisajoz/pixokadaxojixixikexuvov.pdfIn PDF document text
    • https://s3.amazonaws.com/pulavokaxe/gafipexukugewudetoxij.pdfIn PDF document text
    • https://s3.amazonaws.com/tizowodifi/17491220033.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_off0000dd19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD19 5452 bytes
SHA-256: f074aacf73bbb7a40eeeaab2ded2b12080ef31b79fc4c733bce63daa0a4dd5fc
font_01_sfnt_off0000ef8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF8C 10368 bytes
SHA-256: 04ce2a6e5538a2c8b4a364928e8c19c62a7b817551643b08ab21edefca26c0e6

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