Malicious PDF — malware analysis report

Static analysis result for SHA-256 b705cdb5f201f282…

MALICIOUS

PDF

86.6 KB Created: 2020-12-03 22:34:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 07db46517b1f4c59ba82f6ce7b2f3bb3 SHA-1: 7ac14c3d4577fb69f9c8a9beca172598c413ce0a SHA-256: b705cdb5f201f2829cc6c66524328994fedba8fc3c5325ac74f50a9978f69127
154 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating maliciousness. It contains a large number of external links, suggesting a link farm or phishing attempt. The primary external URL identified is `https://trafficel.ru/aws?utm_term=circle+geometry+worksheets+grade+7`, which likely serves as a lure to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9602

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
  • 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.
  • 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://trafficel.ru/aws?utm_term=circle+geometry+worksheets+grade+7 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4414357/normal_5fa76a3013cf5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464877/normal_5fa7bf245d8c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385862/normal_5f8e574fc6154.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460981/normal_5fbca04d84df5.pdfIn PDF document text
    • https://rusokupos.weebly.com/uploads/1/3/4/4/134468665/zozapuno.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445890/normal_5fb3cf587c5d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369317/normal_5f8d91ed06166.pdfIn PDF document text
    • https://piborubaladedos.weebly.com/uploads/1/3/4/7/134764427/kiwiwuvopopufo-vixutanupeku-monelig.pdfIn PDF document text
    • https://kikipaniwuno.weebly.com/uploads/1/3/4/7/134714830/rotuseja.pdfIn PDF document text
    • https://wozuwonasanava.weebly.com/uploads/1/3/1/4/131483955/1647808.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/17732421-9ec9-43c0-8d3c-4a2a6806c40c/75486260308.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd1a827dd1bd0a7626427e/1606228611433/40473357145.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/479a2fc0-abc5-41e7-bf0b-815e7c0c8bd3/tangerine_edward_bloor_full_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd7060d6-ca6d-4b7d-a723-aaec803473fa/gamestop_union_city_ga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33b099a0-b49f-40ad-af1c-8c750f692d21/49290075035.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_off000141e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x141E0 5596 bytes
SHA-256: 6a2d7abfc64604695548ede0539366fa4ac422bbe61448c93a3ef424c250cda2