Malicious PDF — malware analysis report

Static analysis result for SHA-256 54361506f1a2fd6f…

MALICIOUS

PDF

67.3 KB Created: 2020-11-12 14:09:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: bd88ce7e93bcfa6c95f7d6f7f7544150 SHA-1: 119a6e21893fca05d3b3a75fd9ad3f23c5ba0938 SHA-256: 54361506f1a2fd6fdb58e9eeb063a65d4bb6b80603ab652523f9db577c293b1a
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 'ggtraff.ru'. ML classification and ClamAV also flagged this file as malicious. The embedded URL is the primary indicator of malicious intent, likely serving as a lure for phishing or to download a second-stage payload.

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://ggtraff.ru/aws?utm_term=bartonella+bacilliformis+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4415302/normal_5f99e71128f0e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366032/normal_5f8713b8ab069.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408476/normal_5f9802a15e195.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368958/normal_5fa653da7e1dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368478/normal_5fab0605daa6e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402000/normal_5f976cd3cf187.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451028/normal_5fa2b74e6b10b.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/50201a7b-9dae-4931-a361-4e7c8748604f/249_chelsea_pto_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/xesutunewitojefop.pdfIn PDF document text
    • https://s3.amazonaws.com/golepe/bncc_educao_infantil.pdfIn PDF document text
    • https://s3.amazonaws.com/sanekufiwumafo/60782312109.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/jelomusebad.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_off0000c837.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC837 5492 bytes
SHA-256: 3da01adaf3098da063e43ec98c7ef8cecc4aea8c32a3cb062c0f47e6f9302933
font_01_sfnt_off0000dac8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAC8 11928 bytes
SHA-256: 864eedf3aa74b86c153fdd2086ff62212292f1dbf3d2d62e258c3ec327a05afa