Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4e2c911f9513752…

MALICIOUS

PDF

77.1 KB Created: 2021-03-27 13:59:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: b8b18fed2ba588e816827bf4f6a07a7b SHA-1: 132b6c5ffffafcbf4684277fcc98c006648246d2 SHA-256: e4e2c911f951375205a9abfe0eb8ad9fe57af6d9cebb87656de4d2210d18bda4
226 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains numerous external links, many pointing to disposable domains, and is flagged as a link farm and a payment redirection lure. The ML classifier and ClamAV detection strongly indicate maliciousness. The document body, though heavily obfuscated, appears to be a lure related to online services, likely intended to trick users into clicking malicious links that could lead to phishing or malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 7

  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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
  • 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://maypoin.ru/strik?utm_term=how+to+put+amazon+prime+on+twitch PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408324/normal_5fdb7981c9724.pdfIn PDF document text
    • http://dronextactical.xyz/logitech_z_640_setupkblo6.pdfIn PDF document text
    • http://xadexawufomovi.sportsontheweb.net/71480821648.pdfIn PDF document text
    • http://copyright-help-report.com/1032836275519v75.pdfIn PDF document text
    • http://sunugukumota.getenjoyment.net/craftsman_yt3000_belt_length.pdfIn PDF document text
    • http://kevakigev.medianewsonline.com/bazamamutaxigunelo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389107/normal_5fdba54a10bbb.pdfIn PDF document text
    • https://sivabukejiwija.weebly.com/uploads/1/3/4/4/134459056/42d0d965.pdfIn PDF document text
    • https://xawavefite.weebly.com/uploads/1/3/4/6/134667803/sexuri.pdfIn PDF document text
    • https://muvipedoboxeju.weebly.com/uploads/1/3/1/1/131163867/7344019.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454819/normal_604fa8bde8c0d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483602/normal_5fc7dcff949fa.pdfIn PDF document text
    • http://microbladingeyebrowsdallastx.com/8633850976427h37.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388842/normal_6059736867aa0.pdfIn PDF document text
    • https://tuwagufo.weebly.com/uploads/1/3/3/9/133999840/4e09cee1bdb21.pdfIn PDF document text
    • http://sepozimog.scienceontheweb.net/rovilemewenalubogeloleme.pdfIn PDF document text
    • http://dimozakebaba.scienceontheweb.net/guxufuwoz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://c18d7360-3707-4bf1-9d6f-52ba7510fa17.filesusr.com/ugd/76cb06_ede8800abebe44a09785c98fb98304cf.pdf?index=trueIn PDF document text
    • https://a54de82d-0003-4787-801b-d7ee719c780a.filesusr.com/ugd/8d57bd_198cc4a73dcd44019dcef8f04a332287.pdf?index=trueIn PDF document text
    • https://a3de454e-1598-42bb-a259-4eb69c42f179.filesusr.com/ugd/fb5067_5257c684675f4585a29ac15e89ef7ce1.pdf?index=trueIn PDF document text
    • https://c06d174a-caca-4ab2-b5a0-4525cd3135d4.filesusr.com/ugd/856cea_8f7266f2b6d942388045257302d5b99f.pdf?index=trueIn PDF document text
    • https://299bc67c-4c9a-44ea-852c-18f2d39dca40.filesusr.com/ugd/954c8b_daa96b1a1574489eb80c970264c3265a.pdf?index=trueIn PDF document text
    • https://1a9cd40a-f0d6-44d4-a143-19288280ca2b.filesusr.com/ugd/7a13df_f0e1e06e812248379f355466f3e49bff.pdf?index=trueIn PDF document text
    • https://7a579b3f-ce96-4c66-abdc-991530493d29.filesusr.com/ugd/010c6b_7fe7bd6125d046da85974910a6c9c9ee.pdf?index=trueIn 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_off0000edb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDB8 5068 bytes
SHA-256: 228c3696577e43cad107724d22e49b3555b98fa2c064b63829138151f8e38346
font_01_sfnt_off0000fee0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEE0 11348 bytes
SHA-256: 627be442f5844497fab76bfb65457ae887b7e22d7e50cbf8364eed60a67522f4

Open this report in the interactive analyzer, or submit your own file for analysis.