Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd24462781e46c07…

MALICIOUS

PDF

88.1 KB Created: 2021-02-19 12:27:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 32c9200b71cf11c4a73f061e0b43c99c SHA-1: 23bfdf68a5c1dfb8663f5a8451223fbfa3de1b43 SHA-256: fd24462781e46c07e95e3977c0b1aa602e89a7233e09c9ce04a0c58492185cae
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The document body, though partially corrupted, contains a URL that mimics a search query, suggesting a phishing or social engineering lure. The presence of embedded URLs further supports the malicious nature of the document.

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://leonvi.ru/strik?utm_term=is+dunkin+coffee+good+for+you PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4470685/normal_5ff24c3de6755.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386074/normal_5fd2a463c12bb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420760/normal_5fcb054bea7cb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459780/normal_600b47d887748.pdfIn PDF document text
    • http://websecurer.tech/californication_season_2_episode_3_freepnuqh.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/gazivemon/risimunitegopani.pdfIn PDF document text
    • https://s3.amazonaws.com/nitatotol/rugekuzomikem.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibebulosaxug/bakemesemedade.pdfIn PDF document text
    • https://s3.amazonaws.com/xidazeze/akashaganga_movie_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/rimepusox/firalolejalexup.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/wabelojetaga.pdfIn PDF document text
    • http://joxumokuri.epizy.com/73563520185.pdfIn PDF document text
    • http://kevamateralo.rf.gd/action_replay_max_ps2_iso_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/tazibabebamep/ccna_voice_exam_cram.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_off00011a8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A8C 5052 bytes
SHA-256: 020955d8820bcfced6ba89061a302f4aea151e9733d9bee0dcb6b1b6bae6ba00
font_01_sfnt_off00012be0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BE0 11676 bytes
SHA-256: 3bd3acff620b290cb2b33c4d040c6210fe9efe3298bacbaecf5265931e06edf1

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