Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee0f218f4148d0a9…

MALICIOUS

PDF

77.0 KB Created: 2021-04-28 04:08:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 993927e5fe97e6db02b7b0556b9361d9 SHA-1: b2ff43f6afde8b572cef3ac2844178c226e9ecbf SHA-256: ee0f218f4148d0a9132517e9a45504ae795d4286b00594efbc40c5184e4cd742
146 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 a callback-phone (TOAD) 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 0.9996

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://seumenha.ru/strik?utm_term=2000+jeep+grand+cherokee+limited+lug+pattern PDF link annotation
    • https://xetasigebe.weebly.com/uploads/1/3/4/4/134443645/01adc9b19.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469106/normal_5fcf9aec41785.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413473/normal_6056ee02d293b.pdfIn PDF document text
    • https://cdn.sqhk.co/lididiregi/Daigbhd/sudoku_block_puzzle_online.pdfIn PDF document text
    • https://cdn.sqhk.co/bunigenozav/hckuhid/stickfight_2_infinity_mod_apk_android_1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470526/normal_5fe15423aa2fd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470836/normal_5fc805b71bc69.pdfIn PDF document text
    • https://mifajuga.weebly.com/uploads/1/3/4/7/134732675/1a1194f9930d.pdfIn PDF document text
    • https://sugiravo.weebly.com/uploads/1/3/4/4/134455537/bapoluxakanosafowox.pdfIn PDF document text
    • https://mulafixi.weebly.com/uploads/1/3/4/3/134317856/lowagetube.pdfIn PDF document text
    • https://sitofozaliwi.weebly.com/uploads/1/3/4/3/134355749/7286409.pdfIn PDF document text
    • https://gomafaned.weebly.com/uploads/1/3/5/2/135296522/0de47.pdfIn PDF document text
    • https://donimafu.weebly.com/uploads/1/3/5/3/135395233/gudaviju.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492245/normal_6027408bd45c6.pdfIn PDF document text
    • https://bitojobuf.weebly.com/uploads/1/3/4/8/134892495/feditazi-menafeme-xuzefomujom.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/cefa84d9-30be-4654-a8d3-9f1c1ae5309f/mibosokujofak.pdfIn PDF document text
    • http://pimewitonuro.epizy.com/tomoponuki.pdfIn PDF document text
    • http://fufezexu.epizy.com/blob_file_angular_5.pdfIn PDF document text
    • http://nogurinuzelajer.rf.gd/dezabutademapamuvutim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08e14065-0d3a-408c-a0f7-e98a24f1b2d8/muberuge.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/620ce382-cf7b-4eab-b071-94705336be03/wabogero.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e78dbf2e-ffd0-4a03-acf8-fabb22cc83af/gimadad.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_off0000ee72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE72 5628 bytes
SHA-256: e6b1c64103968a5097402bbc4af26910977c846b9dc6c0f97818f7c9452442ff
font_01_sfnt_off00010177.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10177 10812 bytes
SHA-256: e66c9f25c9997adeda5122b9601c12c442f09daa5c126c6d14db28e438637c64

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