Malicious PDF — malware analysis report

Static analysis result for SHA-256 bba113a884e0cc4a…

MALICIOUS

PDF

78.7 KB Created: 2021-03-14 03:49:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 13da5138ec8e010e313d766cfab35f48 SHA-1: b9455e5e7125a21f0a93fd514ee01c220a3b57c8 SHA-256: bba113a884e0cc4a1a64213f10fb34061d0dde2949ade9604adc9ce49f9fedba
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a lure related to car repair, but the primary function is to redirect the user to a malicious URL. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The embedded URL and the link farm heuristic point to a phishing attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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=how+to+fix+a+broken+car+thermostat PDF link annotation
    • http://xufededubumavif.scienceontheweb.net/povet.pdfIn PDF document text
    • https://s3.amazonaws.com/wamatasamegu/talking_tom_2_apk_uptodown.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490722/normal_6011e46603f31.pdfIn PDF document text
    • https://s3.amazonaws.com/vizegemawokaxe/45386935924.pdfIn PDF document text
    • http://bamefidev.mygamesonline.org/amitabha_ghosh_manufacturing_science.pdfIn PDF document text
    • https://cdn.sqhk.co/tatudawo/fhehehf/xabuvu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387037/normal_5fcbd4e692fd7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485821/normal_5fd3356237a1d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464878/normal_5ff9d3628b757.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375696/normal_600c9c211108f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387060/normal_6018be42db355.pdfIn PDF document text
    • https://s3.amazonaws.com/pegozegi/18397583417.pdfIn PDF document text
    • http://rikafitamedad.medianewsonline.com/gurifedonowuwufazi.pdfIn PDF document text
    • https://cdn.sqhk.co/fukonovum/hjPihje/77928407386.pdfIn PDF document text
    • https://cdn.sqhk.co/reriwoduriju/geJLHwG/57886866207.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417652/normal_5fe3c3b6212ae.pdfIn PDF document text
    • https://cdn.sqhk.co/webuzifinuno/JjiieG3/99137354939.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://eac5c218-d238-408c-98a6-8ff0ecbb25fc.filesusr.com/ugd/b1277d_cff986a80101437f92bd9c1e477c1dc8.pdf?index=trueIn PDF document text
    • https://e0d0d77b-4c00-4265-bc22-f0cc5cf11ada.filesusr.com/ugd/957eb4_550f42a67f314ef1b3ef7cc0f00301b2.pdf?index=trueIn PDF document text
    • https://590703a0-be71-4d3c-a49f-17767d5969ef.filesusr.com/ugd/656c20_5a0323d67d7e46e39ce28b0794148f19.pdf?index=trueIn PDF document text
    • https://1b15a19f-c8c2-4d9d-8c2f-e97aa7ecfe2c.filesusr.com/ugd/eb6c48_22231a88b2344081abb2213159169731.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f67a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF67A 5412 bytes
SHA-256: 87c777dd2d54ae7751c147438b3cdbdb5fa923e9c604d94791cfbc38e0025fe0
font_01_sfnt_off000108d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108D3 10724 bytes
SHA-256: 24f03ee1a8e6212449a1d08240528c368c44a011f6f4e164eba51d7610f827ce

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