Malicious PDF — malware analysis report

Static analysis result for SHA-256 87aa50122808360c…

MALICIOUS

PDF

53.8 KB Created: 2021-06-03 03:05:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 73904ffcf56286778ef4983e26f28958 SHA-1: 9be25156f40ff93385bd1d3241a422e75f21c973 SHA-256: 87aa50122808360cc701e696f68a76bf2a33771428971a6b81a28c7965a869bb
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a large number of external links, many of which point to disposable hosting services, indicating a link farm or SEO spam operation. The primary URL, 'https://jottigo.ru/wb?keyword=troy%20bilt%20trimmer%20mower%20model%2052029', suggests a lure related to product searches. ClamAV detected this file as 'Pdf.Phishing.Trojan', and ML classifiers also flagged it as malicious. No scripts were extracted, but the PDF structure itself is designed to redirect users to potentially malicious or spam content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7975

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://jottigo.ru/wb?keyword=troy%20bilt%20trimmer%20mower%20model%2052029 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4500667/normal_5fff998bc99b4.pdfIn PDF document text
    • https://jawuvufos.weebly.com/uploads/1/3/4/8/134856807/464744.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422368/normal_5ff39c452e8b1.pdfIn PDF document text
    • https://jazafojof.weebly.com/uploads/1/3/4/3/134310209/dc87e03503af00.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499351/normal_5ff50e8d62bcd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451018/normal_606120491f4a9.pdfIn PDF document text
    • https://wepugimi.weebly.com/uploads/1/3/1/0/131070973/rokizulalono.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417423/normal_603cc4a03f10e.pdfIn PDF document text
    • https://ginuzakonufa.weebly.com/uploads/1/3/2/6/132681862/mesagipadalila-sulile-pigizu-gebowufipidosu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417329/normal_6043852e60b50.pdfIn PDF document text
    • https://gebigimudixerez.weebly.com/uploads/1/3/4/3/134374499/5101345.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4409628/normal_60b0566f3b8bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469135/normal_5fd64a6500ca4.pdfIn PDF document text
    • https://fajuvupo.weebly.com/uploads/1/3/5/3/135310445/megajanufinuv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496380/normal_6066eaf996411.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443594/normal_606a1dff67ba5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380707/normal_60044a5abd69d.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58bd8040-0abd-4cc5-a33d-4d99a63e27c6/97864199111.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9fddfca7-f4cf-4aa3-85d7-51393492009e/48181880662.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/140ad476-dd4a-444f-a9aa-711ecb3f577a/bozorifilima.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c50e9abc-241c-4b84-8152-959d536d2534/soxiwefimibazasidema.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d96cc22-161d-4b4d-abd5-6e3720ee9bd9/canon_sx700_hs_price_in_pakistan.pdfIn PDF document text

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