Malicious PDF — malware analysis report

Static analysis result for SHA-256 f01b7163d3d4dfd0…

MALICIOUS

PDF

85.0 KB Created: 2021-01-01 13:45:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: c9a7d649679d90a0845b21c0de38a85c SHA-1: 7976b62fc825a6b2c3ff94200f226177c5b1f12f SHA-256: f01b7163d3d4dfd075ca8c3c54ef0d2923219e65254448523ba5bb62ddf58abc
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'. This, combined with a high ML classifier score and ClamAV detection, strongly indicates a malicious intent to lure users to a harmful site. No scripts were extracted, but the presence of a malicious URL is the primary indicator of compromise.

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/strik?utm_term=stepside+truck+bed+tent In PDF document text
    • https://gorijifezavu.weebly.com/uploads/1/3/4/5/134502749/136616.pdfIn PDF document text
    • https://fepuvagugi.weebly.com/uploads/1/3/4/7/134767339/joxafawujageto.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387235/normal_5f926cdbd7a9f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404755/normal_5f9236d2de35e.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/3c02aeba-4971-4e3a-a148-eeb18cc57075/77118900295.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0cef48d0-d3b8-40a6-8c21-5345b91c017e/fipojutona.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4adac680-a626-45c9-9744-3008134c3241/2567113599.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/558d5094-96ce-4d87-9fbb-5453a058ebb1/46370494918.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5516ba2a-67e5-4800-9d46-61da53f952f0/waterdeep_heist_release.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4cbda01d-625b-452b-ac9f-7ee6d85bf12f/binary_addition_and_subtraction.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bfa385f1-b60a-48ad-8b0c-bd81f8d3d00e/what_is_a_fae_creature.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_off00011371.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11371 5132 bytes
SHA-256: 46a06045b28d9d68aee80a94216996e8401b0171d787e85ac7675b8d242b5523
font_01_sfnt_off000124f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124F4 10196 bytes
SHA-256: 8eff075ac24779dc155c2216babf52246cf3e5d7de11e102f9e6c03eb093cd16

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