Malicious PDF — malware analysis report

Static analysis result for SHA-256 3514f015b6d8d124…

MALICIOUS

PDF

69.9 KB Created: 2020-12-24 05:30:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 9ddaec9419a48287512043a20452f429 SHA-1: 8954ee0cd6a7d8932fc39ee1f71eaaf8a804fa27 SHA-256: 3514f015b6d8d124a3e351a4f6e39e87ce6eb136d4e4f58f6d1a6dca5796c59f
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 'https://gettraff.ru/123?utm_term=another+word+for+disliked+by+many'. The ML classifier also strongly indicated maliciousness. While no scripts were extracted, the presence of a malicious URL within the document body suggests an attempt to lure the user to a harmful site, consistent with phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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=another+word+for+disliked+by+many In PDF document text
    • https://cdn-cms.f-static.net/uploads/4381083/normal_5f8f0963652b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468827/normal_5fbf59efbda7e.pdfIn PDF document text
    • https://cdn.sqhk.co/baxemazisod/jdhf1OD/bombastic_bag_man_ps4.pdfIn PDF document text
    • https://cdn.sqhk.co/dutebevon/gnahaig/ara_pacis_storia_dell_arte.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457311/normal_5fd77b109b8fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468253/normal_5fd9a1b3cbee0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/73729d4a-5ca0-48ea-9cef-61b1f18ce13d/flight_stability_and_automatic_control_2nd_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/remuv/barurasebepamatajoja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f03a2308-656b-4010-878e-17664a555182/mipugifewi.pdfIn PDF document text
    • https://s3.amazonaws.com/vobuturinivi/luxojevonozosejobuj.pdfIn PDF document text
    • https://s3.amazonaws.com/kitakilesa/pozurine.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagobomap/miveduvevobawewuwelaju.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c734.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC734 2972 bytes
SHA-256: 930f23d2995161be8163e1e1cc0825de794ffa756557b40d0517da21fd913d21
font_01_sfnt_off0000d1dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1DC 5536 bytes
SHA-256: 545adf562e14472eb62c23ad731312c5d22750f9ef3ef87deed824cd5f8b060b
font_02_sfnt_off0000e495.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE495 11204 bytes
SHA-256: 548b2a96a70eda2659e930a2428d037ff6685efc5cc67f2383385bb28c2ec9aa

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