Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ed1ce49ffb69c9c…

MALICIOUS

PDF

75.6 KB Created: 2020-12-28 22:34:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 1b3323b4259d9812c65f9aab762a69df SHA-1: 703391754463696538948e212620b864b943f131 SHA-256: 7ed1ce49ffb69c9c91f93a47d73822fbb7c629773a13f9619e00cb176e58141b
186 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as a link farm designed for SEO manipulation, containing numerous external links. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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
  • 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://trafffe.ru/123?utm_term=pullman+christian+reformed+church+chicago+il PDF link annotation
    • https://damijuvik.weebly.com/uploads/1/3/1/3/131381376/resujedefovalex.pdfIn PDF document text
    • https://vizosajigu.weebly.com/uploads/1/3/1/3/131381839/fefim-sudekoxuzisux-nelesudizi-samenejotanojez.pdfIn PDF document text
    • https://radunepik.weebly.com/uploads/1/3/4/6/134617153/43684ae52719.pdfIn PDF document text
    • https://pafebexazare.weebly.com/uploads/1/3/1/1/131163914/puporafijozux.pdfIn PDF document text
    • https://nadaxobolimige.weebly.com/uploads/1/3/4/3/134365666/mewajasevesa_raduniba_vabokas_pawufadisimavi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392664/normal_5f94db7f6e38f.pdfIn PDF document text
    • https://lomimasexoguxi.weebly.com/uploads/1/3/4/7/134736135/5f563d6dfdf708f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/27d89d5f-c892-433c-bb6d-a360a7540213/go_chicken_go_7th_street_kansas_city_kansas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63534a43-1b1e-4949-8a50-50d787c146cc/92087474121.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffeb3797-de28-454a-b655-27b98221b2ec/pirivixutifijilavafejo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5884c3a6-afa2-418b-8565-b52c92371c36/4474322451.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/511870b7-437a-4440-9d0b-685f695f3a0b/tipesupanikulazanubef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0ab5901-fa73-4485-822d-7fe6a869083e/33537384867.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53b50ba2-72cc-42f7-a0f4-4012219c771e/cancer_cell_processes_and_energy_worksheet_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cee0e5ee-e7cd-4d85-80f4-554313d89caa/best_fitrep_bullets.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD58 5316 bytes
SHA-256: 4570193376f95d14f0255e71cc11f533c092fd9269685ecc22244e0646da3364
font_01_sfnt_off0000ef2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF2D 10508 bytes
SHA-256: 0a115bc0f4534a304ebc5c3dfd919b52a31c733e32ec5bdf690b85c7ed38d749
font_02_sfnt_off0001133d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1133D 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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