Malicious PDF — malware analysis report

Static analysis result for SHA-256 350767501f9ee58d…

MALICIOUS

PDF

77.4 KB Created: 2021-01-11 11:19:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b264f841e0d0400dcea0864b9d0960d2 SHA-1: 75279971f8294684f2e49afb3a491a25ef42f452 SHA-256: 350767501f9ee58d81060a5291130366ea1842eaefd4810909c2038c2ae493db
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL, 'https://ggtraff.ru/123?utm_term=the+world+history+of+animation+pdf+download', is presented as a download for animation history, likely a lure. While no scripts were extracted, the ML classifier strongly flagged this PDF as malicious, suggesting a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://ggtraff.ru/123?utm_term=the+world+history+of+animation+pdf+download
    • https://cdn.sqhk.co/gufezitaxato/jPjcsQB/play_pac-_man_vizzed_midway_arcade_game_online.pdf
    • https://cdn-cms.f-static.net/uploads/4376629/normal_5f99c5b9b09b3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/gonavo/77491759509.pdf
    • https://s3.amazonaws.com/pegek/famaxugaz.pdf
    • https://s3.amazonaws.com/vutame/bintray_android_gradle.pdf
    • https://s3.amazonaws.com/midipes/28677267870.pdf
    • https://s3.amazonaws.com/jadere/candystand_miniature_golf_game.pdf
    • https://s3.amazonaws.com/numunenoji/bafifofazumivuxija.pdf
    • https://s3.amazonaws.com/zepifudoxapo/rolaxivezujixasotufakat.pdf
    • https://s3.amazonaws.com/jeworurowam/barbershop_music.pdf
    • https://s3.amazonaws.com/mejigavukolu/35776919769.pdf
    • https://s3.amazonaws.com/zetare/pazazazi.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_off0000f0ab.bin
1872d930c2d89bef4c3e526e1c6db81e279adfdc170462d1d4e9be37071153d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF0AB 5424 bytes
font_01_sfnt_off00010308.bin
427d986095c0a54c32784b73130dfb25362f71b1872b62b2dac010c798f1b3bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10308 11052 bytes

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