Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d4f509598c0ab52…

MALICIOUS

PDF

69.6 KB Created: 2020-11-09 18:51:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: a99eea5cb429e8e586e620be3de1fcb8 SHA-1: cc8dcb419b7c0038632824c065a25f2d267ce6b4 SHA-256: 6d4f509598c0ab524fd81d1a52daffb55dcc92c45f8ec1d7751459d3c3e9917f
184 Risk Score

Malware Insights

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

This PDF file was identified as malicious by multiple heuristics and a machine learning classifier. It contains a large number of external links, with one pointing to 'https://trafffe.ru/aws?keyword=free+psn+generator+without+human+verification', suggesting a phishing or scam lure. The PDF structure and link farm behavior indicate it's likely part of a campaign to drive traffic or distribute further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9679

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffe.ru/aws?keyword=free+psn+generator+without+human+verification PDF link annotation
    • https://turekapagatonug.weebly.com/uploads/1/3/4/3/134327337/6379835.pdfIn PDF document text
    • https://boxolajabamofi.weebly.com/uploads/1/3/4/3/134356625/3898754.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388841/normal_5f91f12e24177.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/movew.pdfIn PDF document text
    • https://kimiligemapi.weebly.com/uploads/1/3/4/3/134343210/gurejizig_sabajufopule_bedagaveduxeluk.pdfIn PDF document text
    • https://sojizekupiguj.weebly.com/uploads/1/3/4/5/134586608/xigexeb-gejopoxe.pdfIn PDF document text
    • https://gemegomuzek.weebly.com/uploads/1/3/4/3/134339500/1021478.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/843bdcfa-5433-4d9d-9c7e-723b216af46a/20780117864.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab78cc51-8097-4a28-8223-b51b87a9b7de/nervais_in_english.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e493ddea-240c-4b9c-a5df-7956ab80b820/johnson_seahorse_10_carburetor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e57acea5-7732-48c3-8054-f7391a35bd1e/mefozaxituwesasijuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/296854ff-712b-4f97-b833-b3a5384b2e15/76103182035.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1bd9e1f-71c4-43d9-85dc-6e1645e43690/gipogen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0dae1e29-b75f-4a58-886b-ba84cc5ccd77/resume_samples_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d47530c4-87c9-47ff-928a-4612ec61cbff/41782323912.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f6e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6E1 5504 bytes
SHA-256: 216b88ea5c3a8ebb35219d6f8bf7a92354b8a581c58cc67218f7074e58f6b4c3

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