Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f54467eb3d25abb…

MALICIOUS

PDF

66.5 KB Created: 2020-11-18 01:15:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: e268d2a409099f0b80c0de379f818348 SHA-1: 9c9e546cbb3ba25495dbeb0d12b8f56cd085d308 SHA-256: 7f54467eb3d25abb2ed323f50ee18d1b1a507b9fdd8e0b9f4a3af2c3d64e4f9b
154 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ggtraff.ru, which is disguised as a lure for the 'iTunes App Store'. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URL suggest it's designed to redirect users to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=itunes+app+store++pc In PDF document text
    • https://cdn-cms.f-static.net/uploads/4382639/normal_5f8bfa5070b14.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391315/normal_5f9a4e65bd156.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473035/normal_5fa8baaa928f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381964/normal_5fa42b6fb059c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408009/normal_5faa35cf08d5d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368243/normal_5f8950101e71f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373297/normal_5f8d293bf0192.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/tosevud/betive.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/zipodujevimabopaxik.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawexawinogad/zisikozokulolizetodob.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/4th_goal_2016.pdfIn PDF document text
    • https://s3.amazonaws.com/bokofapig/zigilekiwamomukikule.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01c87482-8c05-40c6-ba97-09e88383ab1d/chevy_6_speed_manual_transmission_4x4.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_off0000c785.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC785 4832 bytes
SHA-256: ce61236688a4225463b583092b3cab7c83e1395fd2ad0e6c6f4c83066907b14d
font_01_sfnt_off0000d803.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD803 11576 bytes
SHA-256: 408ca625949afe5a3edfcb1a320d84ed00735be04d99028a9218ee9b02d46cc8

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