Malicious PDF — malware analysis report

Static analysis result for SHA-256 6425737ae160ef15…

MALICIOUS

PDF

57.5 KB Created: 2020-11-21 15:15:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 27cfe62e0095eaf93fcf44c6b99fa356 SHA-1: 7dadda1640039cc95341b6ae98908fb172f24509 SHA-256: 6425737ae160ef152c78605ebd195318417f6ee3089f20834f763459fa422e4e
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=conkerr+cancer+pillowcase'. ML classification also strongly indicated maliciousness. While no scripts were explicitly extracted, the presence of a malicious URL within the document body strongly suggests an attempt to lure the user to a harmful site, consistent with phishing or malware delivery via a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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=conkerr+cancer+pillowcase In PDF document text
    • https://cdn-cms.f-static.net/uploads/4373248/normal_5f8d41811fe3f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392871/normal_5fb806706834b.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/b588a220-bbf5-4ce4-b790-a8a7d42cfee0/rasevebopariviwufizi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fcf9adfa-bf10-4a59-883e-9b552e660635/munkres_topology_solutions_chapter_9.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2dccae1f-354a-47ce-8418-e41afc1f86bd/mifefivam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d80ebbb-ff6b-4392-b2fb-384cd38a3cb8/download_root_tool_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90000ab5-27d1-4455-ad29-7f02876cf71e/bujazimuvubatufikiwawos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24c6f168-7128-4406-bab5-0e32effc1075/bofuzoxefenarolerizufe.pdfIn PDF document text
    • https://s3.amazonaws.com/wulotugadag/lyrics_to_lead_me_guide_me.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c73b8811-3167-41e0-84ac-92eaa5be2720/78258138893.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/142795cc-f490-430b-ac0f-92a4da9ffc6d/48180506758.pdfIn PDF document text
    • https://s3.amazonaws.com/nefomojuwet/65559103910.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_off0000a8e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA8E5 4988 bytes
SHA-256: b4571a9cf5412532d1394aacac15fc87b27809c2ff39ebc3a8f31ffcbc0609ea
font_01_sfnt_off0000b9fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9FD 9256 bytes
SHA-256: e8f49611d55718b7121c1c52286a45d693e6bd791a0fdaff1857bc850891a61e

Open this report in the interactive analyzer, or submit your own file for analysis.