Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fbaaf84b5fdb151…

MALICIOUS

PDF

85.4 KB Created: 2021-02-28 16:03:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 78a3fd4135ee52ef9f2d1d26ab3caff2 SHA-1: 95abf7b6708586edc74ea0a4b1c3afec393597ad SHA-256: 0fbaaf84b5fdb151a13794cc7e0cb37172f109f0e2d47d41a238d78db6a260e1
96 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, appears to be a lure related to search queries, further supporting a phishing or social engineering attack vector.

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/strik?utm_term=what+is+usa+national+anthem+lyrics PDF link annotation
    • http://titanof-filtr.ru/jefedilonipuvudifajetokqgya.pdfIn PDF document text
    • http://airet.space/what_are_the_core_elements_of_hrm9ehtv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372719/normal_5fdd343ead10c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457839/normal_5ff24fa422de4.pdfIn PDF document text
    • http://pubguckazan.com/bhagavad_gita_slokas_with_meaning_in_telugujuii3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372072/normal_5fef36528521d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459321/normal_5ff853c804db5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475209/normal_5ff7aec34d02d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454671/normal_6001c0be4da58.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480582/normal_60079a4f19551.pdfIn PDF document text
    • http://medyayazilimtr.com/koribijevakanegafigez481f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450730/normal_6026e930e6f9e.pdfIn PDF document text
    • http://italysummer.fun/273657597395kcqm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383137/normal_6023f9fcc5f79.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447263/normal_5fc5995090b0c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00010aa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AA5 5156 bytes
SHA-256: 90069ecc6c8c96c9e43f24ee55d9fbb1919e6780511d21cb42d0c3cf44ce53b7
font_01_sfnt_off00011c11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C11 15292 bytes
SHA-256: 3330b3e10e89c8c5c355f3dc5f7ab873c9bcb7ddbffcd04e6ca36428a348114b

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