Malicious PDF — malware analysis report

Static analysis result for SHA-256 683d720a64fadf16…

MALICIOUS

PDF

67.9 KB Created: 2020-11-11 22:16:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: c08894df2c3078a15e95c988e1dc1b26 SHA-1: f76fe08bfabff66c11abb8a0cb2a2ef72520fc67 SHA-256: 683d720a64fadf164f622f637dcd0fbf2d438fba719963a1cd6960430ff48457
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. While no scripts were extracted, the embedded URL is the primary indicator of malicious intent, likely serving as a lure for phishing or to download a secondary payload.

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://ggtraff.ru/aws?utm_term=financial+statements+analysis+example+pdf In PDF document text
    • https://vozunutav.weebly.com/uploads/1/3/0/9/130969695/ruwuxegamatetuz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365653/normal_5f87ddf6428cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365642/normal_5f88c5341d26f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384464/normal_5f9ff0f78f71d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460449/normal_5fa537b14d747.pdfIn PDF document text
    • https://tijabitosivu.weebly.com/uploads/1/3/4/3/134396728/dawomes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393515/normal_5fa4b00303619.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/987fd47e-1edc-40d3-b8d1-81abb98b016f/67186949405.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1ea9872-4fc7-41f0-86b8-014331c0d772/mevegunofenu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ecb43ed-90bd-4f97-973f-49b25edc6b5a/biwut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82b9d7ff-777d-443f-bb41-5a193129c5b4/71199260248.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76618e74-edc7-4c05-ac28-1e49cc735d52/97935304531.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_off0000cae0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAE0 5332 bytes
SHA-256: c87762a8f9144cc6cdb6806a7d2e554a72dd380e8c97ed00aad533f93392f34b
font_01_sfnt_off0000dd04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD04 11100 bytes
SHA-256: 680aca623dd2a209ac1b4c20537b868cbdb691f72a79a36662f426deaadf5759

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