Malicious PDF — malware analysis report

Static analysis result for SHA-256 7098ba98f672bdca…

MALICIOUS

PDF

70.4 KB Created: 2021-03-28 07:48:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 571b33fc99813bf7e0041d524dc2aefe SHA-1: dec6d40a7444b3b9adb03137408aec1d3da24095 SHA-256: 7098ba98f672bdca959c0c6d934dc4c72f95b5fb0011347b57d08c29786a3654
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a large number of embedded URLs, many pointing to disposable domains, suggesting a link farm designed to redirect users to potentially harmful content. The document body is heavily obfuscated and unreadable, but the presence of numerous external URIs is a strong indicator of malicious intent, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://maypoin.ru/wix?keyword=great+scotts+eagle+idaho PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4465007/normal_6058f1b5f19b0.pdfIn PDF document text
    • http://wepisoja.mypressonline.com/ronovexupudubaf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476941/normal_5fe14bd782ca8.pdfIn PDF document text
    • http://kolagozisil.mywebcommunity.org/26497592447.pdfIn PDF document text
    • https://cdn.sqhk.co/tisufupujeli/fDBhiih/16676606361.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485705/normal_60092c44dcbb4.pdfIn PDF document text
    • https://cdn.sqhk.co/mekaxosur/hjHgegg/vofevoxasasazan.pdfIn PDF document text
    • http://lukiduxipapep.mywebcommunity.org/business_law_today_11th_edition_free.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462038/normal_600100cf69f77.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464534/normal_5fcc6266bfa96.pdfIn PDF document text
    • http://pozufopajosel.mypressonline.com/48697329256.pdfIn PDF document text
    • https://cdn.sqhk.co/zapiseniw/lqFjdig/ice_hockey_training_programme.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ca30e0e0-ecf2-44ab-b6a2-fe26291458be.filesusr.com/ugd/34e21e_a42fa06a06e64b9d9aa6188a3ca683db.pdf?index=trueIn PDF document text
    • https://29bb9f0a-cb36-4278-8b1c-05d86a2267e4.filesusr.com/ugd/25e746_4d8af5a8a11743d7826168ab16767e02.pdf?index=trueIn PDF document text
    • http://bilisedutave.myartsonline.com/gould_ontogeny_and_phylogeny.pdfIn PDF document text
    • https://329f26c8-0235-4118-8622-173d264d9cf1.filesusr.com/ugd/221f3a_38bf5b15919c413690889a2e5355a0b5.pdf?index=trueIn PDF document text
    • http://molagegivijoxu.onlinewebshop.net/vukibaneze.pdfIn PDF document text
    • http://xowobovu.myartsonline.com/ziwepalemexojam.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ceb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEB4 1644 bytes
SHA-256: 42714cac10d5847722da42ab3a950b8eb10b27af748ed2b8eb5f860801862c7e
font_01_sfnt_off0000d6b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6B5 5232 bytes
SHA-256: 7533511a28155d4173e307d0024aced0857dd30a91018204e218449b3ac1b998
font_02_sfnt_off0000e874.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE874 10600 bytes
SHA-256: e716389b0e13969b406648c2cb4dffddcd41d160ba0e48b708f00a304a04eff3

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