Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e4a00b8d3fe2ed6…

MALICIOUS

PDF

74.8 KB Created: 2021-06-03 14:50:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: c9772ef2693393384e0f8caeb28800ff SHA-1: 1dbedd5524b52f747abffdc4af8cc3c37fe4ff4c SHA-256: 6e4a00b8d3fe2ed661fa0926df2bd368d0d961f519d73d78dc037489b0be947a
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains a large number of external links, identified as a link farm. The primary URL, 'https://pistant.ru/pbw?utm_term=subway+surfers+singapore+hack+download+for+pc', suggests a lure related to game hacks, likely intended to trick users into downloading malicious content or visiting phishing sites. The ClamAV detection and ML classifier further support its malicious nature, indicating it's a phishing or trojan distribution mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7399

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://pistant.ru/pbw?utm_term=subway+surfers+singapore+hack+download+for+pc PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4415929/normal_6043eb759349a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462982/normal_604250b43afc8.pdfIn PDF document text
    • https://ledekatibawe.weebly.com/uploads/1/3/4/2/134265754/tovirorota.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465257/normal_6038e6b3aaca7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409258/normal_6000209238999.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467589/normal_6061b7608d46b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483354/normal_601f052c7b2e6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385010/normal_601fdfd52eaf3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413017/normal_605f74fc1cd3d.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4369640/normal_60b07cbba6c42.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391893/normal_5fca6e025a4d8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449183/normal_5fec0b6b9645a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502819/normal_5fe785e1bdfcb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372105/normal_6047f9197809d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388285/normal_606c3aeb914a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463791/normal_60403bc7514f9.pdfIn PDF document text
    • https://wizejuxexena.weebly.com/uploads/1/3/4/6/134655833/05a36d.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/91e21617-3774-43e2-b05c-e935bc963f6b/91270123305.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31dfcfcf-39e3-4b9f-91df-51680c64865b/rinuzixepenogijili.pdfIn PDF document text
    • http://dejulagimu.pbworks.com/f/bosch_vp44_service_manual.pdfIn PDF document text
    • http://ruxafonan.pbworks.com/w/file/fetch/144490680/80850636213.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/834f0afe-bd44-4f8a-b8dd-2f98b8ac70cf/fazisogegizeligezufekevav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/922a591b-0fc2-4cd1-b152-c8f879ed7474/who_kidnapped_janie_in_the_face_on_the_milk_carton.pdfIn PDF document text
    • http://vajaxasave.pbworks.com/w/file/fetch/144459903/53459759096.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ca62e3d-7ace-4d79-9dde-4ad552348875/foleduwawujewifesonoso.pdfIn PDF document text
    • http://mogulazedub.pbworks.com/f/63604448730.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f155.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF155 5920 bytes
SHA-256: 1d379b93fbf500ffdb6b883df4de6d8f4e01a718be774b6d16387ed6dcca455f
font_01_sfnt_off0001058c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1058C 10756 bytes
SHA-256: 6dd588c4f04b56476198f33486b4c5756af19d4681498330e709bb64b92916e4