Malicious PDF — malware analysis report

Static analysis result for SHA-256 fde1e2e96ebbb41a…

MALICIOUS

PDF

96.2 KB Created: 2021-05-15 11:10:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 6cb9dc781e2ea16a318559cbb803fcd9 SHA-1: 152c4744e994abcb62aee343aec5600926af38cf SHA-256: fde1e2e96ebbb41aa5bc9a0a2d187ad40f966ddbd507d30970ae095fe03f5253
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses an urgency-based lure. 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 0.9961

Heuristics 6

  • 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 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://botokaw.ru/strik?utm_term=30+day+cancellation+policy+template PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4450042/normal_601de69641c1d.pdfIn PDF document text
    • http://forovasax.medianewsonline.com/32809843651.pdfIn PDF document text
    • http://sewukagazub.mypressonline.com/encyclopedia_of_flowers_with_pictures.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366662/normal_5fd772aaef009.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420604/normal_60368206d1233.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459060/normal_604320e7c6a9c.pdfIn PDF document text
    • http://dalifajebuxog.scienceontheweb.net/1121353788.pdfIn PDF document text
    • http://lukunezevowazol.sportsontheweb.net/lofelarujusavidojerad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478688/normal_60430e32bc3fc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425211/normal_5fced20c2ad68.pdfIn PDF document text
    • http://bagerisevi.scienceontheweb.net/tulilufewumagarapi.pdfIn PDF document text
    • http://ruxuzosok.mywebcommunity.org/83482204959.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413370/normal_5fc813d6deeb4.pdfIn PDF document text
    • http://gapagal.mywebcommunity.org/vekipegonizaxusowusixuz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369908/normal_60317576c431e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373261/normal_5fd9e1bd3f017.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379841/normal_5ff6a6049c361.pdfIn PDF document text
    • http://xemizawufogutuf.scienceontheweb.net/whirlpool_dishwasher_wdf320pads1_manual.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/6d4e8184-2a71-41da-8248-c507b58f0893/pergamino_1_el_vendedor_mas_grande_del_mundo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0baa2ec-80c0-415b-af36-50b3f7f958aa/2316604332.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8c7758d-2e4e-4b69-85ce-ae3cc148716c/19679134797.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e5d6a9c-f0de-42f9-b446-ca75cf9f61e6/crazy_rich_asians_netflix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19807ba9-0645-4690-8093-a110fdc64610/55194940656.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e9743c7-0aa8-4010-86eb-775a32647e69/fixojadomiwo.pdfIn PDF document text
    • http://palexibibiw.atwebpages.com/ielts_speaking_part_3_tips.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17c8d25e-957f-418b-a137-8581507fd776/does_juice_plus_really_work_for_weight_loss.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf1ca5f8-31fc-444b-ad80-3b935fce074b/63722759711.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ceaad7ed-52b0-4475-b852-d183e0baa38e/honeywell_thermostat_th6110d1005.pdfIn PDF document text
    • http://kuxubakelixuzot.atwebpages.com/lidobikamiru.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In 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_off000139e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x139E0 5260 bytes
SHA-256: 18e8b018515570685955f4e87e2b14c026512023c1cb792245cfac3e5b9dfec3
font_01_sfnt_off00014bbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14BBE 11548 bytes
SHA-256: f836c3d6eaaffeecbf3004a961ee7e78472cf898a4d5210f5b93cf38f64a63c6

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