Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7eaa0675a90d2b4…

MALICIOUS

PDF

215.3 KB Created: 2021-01-16 03:03:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: ab588c71f5078c9f5ceea3cd31cc0e42 SHA-1: ec0e9eb52efbd48170e8fbc91e55aee8f3d703fb SHA-256: f7eaa0675a90d2b472faaf329eee211a7dd4424a7a60cf45479df12eff1d1701
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'gettraff.ru'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of a malicious URL suggests an attempt to lure the user to a compromised site, likely for phishing or to download a secondary payload. The document body is heavily obfuscated and unreadable.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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
  • 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://gettraff.ru/123?utm_term=dnd+3+5+brown+bear In PDF document text
    • https://cdn.sqhk.co/lezebulodiw/psPpiiu/dogolomovukalefekon.pdfIn PDF document text
    • https://site-1246262.mozfiles.com/files/1246262/arm_compiler_toolchain_5__01.pdfIn PDF document text
    • https://site-1177258.mozfiles.com/files/1177258/faded_alan_walker_hop_world_remix.pdfIn PDF document text
    • https://site-1172173.mozfiles.com/files/1172173/turaso.pdfIn PDF document text
    • https://cdn.sqhk.co/kedezoge/BCghmji/ronin_warriors_myanimelist.pdfIn PDF document text
    • https://site-1178798.mozfiles.com/files/1178798/lulufa.pdfIn PDF document text
    • https://site-1176228.mozfiles.com/files/1176228/40956590683.pdfIn PDF document text
    • https://cdn.sqhk.co/tokarikadez/jeuhe9s/download_stick_empires_3d_mod_apk.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/palikuvexake/26857227141.pdfIn PDF document text
    • https://s3.amazonaws.com/gifiz/riputuvepepo.pdfIn PDF document text
    • https://s3.amazonaws.com/penefelomiju/jomukakifiwafanal.pdfIn PDF document text
    • https://s3.amazonaws.com/fomudebipefasu/15548519431.pdfIn PDF document text
    • https://s3.amazonaws.com/nemafu/deadpool_1_rating_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/napejaxosinages/tavexepiluvuzotikale.pdfIn PDF document text
    • https://s3.amazonaws.com/folexapurilowe/53599950731.pdfIn PDF document text
    • https://s3.amazonaws.com/pomaxa/kominsky_report_netflix.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_off00030f86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30F86 5128 bytes
SHA-256: 469f063edb40ecf2aec4a95b71e06422e834a198e7b1af04439e44b7ddcb322c
font_01_sfnt_off00032122.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32122 15072 bytes
SHA-256: 477f2cb0a26601ee543fa9c399221c51624dd244c307c8c9b10e83b518a8710d

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