Malicious PDF — malware analysis report

Static analysis result for SHA-256 755b137d2d66cbe8…

MALICIOUS

PDF

48.0 KB Created: 2021-06-09 04:53:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 8652db4cd1ab6b59c304ed782daae5db SHA-1: 83c3cfbc0c35a22a9d43b38a7161f5ac50d3dcba SHA-256: 755b137d2d66cbe81f03b0653dc84794a887dfa86afb1447e97abf3d43092a68
124 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7209

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
  • 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://xezojetit.ru/123?utm_term=spitfire+albion+one+free PDF link annotation
    • https://sokikafumuwo.weebly.com/uploads/1/3/4/6/134697409/denivok-gobarunebepevap.pdfIn PDF document text
    • https://labiduto.weebly.com/uploads/1/3/4/5/134584073/ab6f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489843/normal_600d58566ec70.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413696/normal_603a0c0f02f14.pdfIn PDF document text
    • https://pomawuro.weebly.com/uploads/1/3/4/3/134368023/1d7679ff8c68528.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422645/normal_5fddf7bd1b7e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405185/normal_60226cfb1151c.pdfIn PDF document text
    • https://podixokudaz.weebly.com/uploads/1/3/4/2/134236532/6263024.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482219/normal_6004c15e6fe7d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367646/normal_5fd5f41beb0db.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368976/normal_5fc884f95dcef.pdfIn PDF document text
    • https://jadibezunapav.weebly.com/uploads/1/3/4/6/134610372/fda2b01f4.pdfIn PDF document text
    • https://xupazipul.weebly.com/uploads/1/3/5/3/135325103/mebumem_wanuk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465559/normal_60b9dd282e4c9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471081/normal_5feb02d33286c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403141/normal_60bdf46ba93b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482403/normal_601b31a6f2f33.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384035/normal_5feda506bd44c.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa4b0c38-f8c0-44f0-b2b3-a63f62db9ccf/vigawuwakunuxawofajokufi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e1f2c5b-fbb6-48cd-a63d-ee2c08b55c4a/salud_publica_definicion_segun_varios_autores.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ddfac7be-8c83-4a85-9cb8-2ed7632d9dbe/garmin_forerunner_405_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/729d6bf6-c1f7-4b75-aecb-0719aced9e0f/sofoxegefajukufelavijisan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1969bc4-ab65-4202-8805-47a256a7d6c4/79075383793.pdfIn PDF document text