Malicious PDF — malware analysis report

Static analysis result for SHA-256 d90d3cc8759902f7…

MALICIOUS

PDF

73.9 KB Created: 2021-01-16 16:51:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: df9b6f19bbefca9eaa862e32f55dd9f0 SHA-1: 80b74222428f51e8ddf54f09fec0cb1653681de6 SHA-256: d90d3cc8759902f7a49ebfe9504417d637aabbe4a5ed7c55a048914eba3a1fd2
154 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, specifically the URL https://gettraff.ru/123?utm_term=2002+lexus+rx300+repair+manual. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious URL within the document body suggests an attempt to redirect the user to a harmful site, likely for phishing or malware distribution.

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
  • 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=2002+lexus+rx300+repair+manual In PDF document text
    • https://site-1232909.mozfiles.com/files/1232909/50000778679.pdfIn PDF document text
    • https://site-1172079.mozfiles.com/files/1172079/fiwikitidijoxipipegoze.pdfIn PDF document text
    • https://site-1176876.mozfiles.com/files/1176876/44923662724.pdfIn PDF document text
    • https://site-1175656.mozfiles.com/files/1175656/mupasesepotatoredaw.pdfIn PDF document text
    • https://site-1167992.mozfiles.com/files/1167992/microsoft_office_configuration_analyzer_tool_1__2.pdfIn PDF document text
    • https://site-1177284.mozfiles.com/files/1177284/48586884917.pdfIn PDF document text
    • https://site-1167961.mozfiles.com/files/1167961/top_10_best_adventure_games_for_android.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/daraniwekamidir/vogugotakotitel.pdfIn PDF document text
    • https://s3.amazonaws.com/leributafa/56443109926.pdfIn PDF document text
    • https://s3.amazonaws.com/fosawef/17511979546.pdfIn PDF document text
    • https://s3.amazonaws.com/sabobenuwe/xelaxutoxaxilesuvijeni.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_off0000db59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB59 5376 bytes
SHA-256: e2a330044e4acd8562ed32b4d18528e56845a35334a9d2d26f35ce8df4bff014
font_01_sfnt_off0000ed89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED89 13552 bytes
SHA-256: ee21aa4e6b33e2b62433524eeff0c03c08d67cc2c4e52d4441a9f1d26917680c

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