Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f30c3b777849579…

MALICIOUS

PDF

38.2 KB Created: 2020-11-05 23:44:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 2404e23e6bdf685165068236b076948c SHA-1: 966c3eb4bc68fcd03cb5243fd1b4cf1c96b0f30e SHA-256: 6f30c3b777849579e232811608a9271d36862f86c32077d7445af516be7d25d4
76 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file contains a lure related to 'young justice rocket' and a high-confidence heuristic indicates it is a redirector link for phishing. The embedded URL, https://traffset.ru/strik?keyword=young+justice+rocket, is the primary IOC. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the nature of the redirector suggests it's intended to lead the user to a malicious site, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffset.ru/strik?keyword=young+justice+rocket PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369656/normal_5f8de3fd7df7f.pdfIn PDF document text
    • https://sopulekazixov.weebly.com/uploads/1/3/0/7/130776801/pizuvepivepikux.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365591/normal_5f8a94e105283.pdfIn PDF document text
    • https://gasodugolulo.weebly.com/uploads/1/3/4/3/134375537/8243118.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369784/normal_5f8d673c743b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387567/normal_5f9edf9018eb2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419654/normal_5f9fd6cab2a66.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393489/normal_5f99ec265de9a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/mijedusovineti/tutar.pdfIn PDF document text
    • https://s3.amazonaws.com/wukara/3_tube_rack.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ddc6ffb6-057a-4656-a75a-036144be269e/what_level_does_herdier_evolve.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13358d71-6bef-44cd-b527-f02e24ac12df/xijusarexikuresid.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004865.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4865 4708 bytes
SHA-256: 99587095e3bf244268470d91512597325d4cc8ec7dfd552ee294b715a0602f9d
font_01_sfnt_off00005882.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5882 10908 bytes
SHA-256: 28a59706e5496bfec9e073101f49c26dbd7c3f22247d4ac2825187848a156df4
font_02_sfnt_off00007df8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DF8 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230