Malicious PDF — malware analysis report

Static analysis result for SHA-256 d225369d0dc7fa60…

MALICIOUS

PDF

70.1 KB Created: 2021-02-16 04:58:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: ce76abe6096e67b9c38a6225c90dbd6e SHA-1: 7b9e3619c54dcd49630ccec21cb8e07d51b06758 SHA-256: d225369d0dc7fa60df827d6ce6dd83fb34f3234cbdbac13f58a72e79dd3938f6
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by both ClamAV and an ML classifier. It contains a significant number of external links, many hosted on disposable domains, indicating a link farm or SEO manipulation tactic. The primary URL, 'https://seumenha.ru/wix?keyword=my+time+at+portia+land+run+glitch', suggests a keyword-stuffed lure. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest it's designed to redirect users to potentially harmful content.

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://seumenha.ru/wix?keyword=my+time+at+portia+land+run+glitch PDF link annotation
    • https://xexafuru.weebly.com/uploads/1/3/1/0/131070851/428506.pdfIn PDF document text
    • https://gafapelisepofas.weebly.com/uploads/1/3/4/7/134762307/tober.pdfIn PDF document text
    • https://cdn.sqhk.co/pikevasoze/aOKijhe/hexion_louisville_ky.pdfIn PDF document text
    • https://cdn.sqhk.co/mogizufofuj/ejgJvhc/25384490865.pdfIn PDF document text
    • https://cdn.sqhk.co/metexemoraga/qiegjgg/pefiwemujejidipovivamidu.pdfIn PDF document text
    • https://pesiwuveso.weebly.com/uploads/1/3/5/3/135392822/xuvopo_wedijagarize.pdfIn PDF document text
    • https://cdn.sqhk.co/vorebilifi/ifCjiID/bollywood_songs_mp3_download_320kbps.pdfIn PDF document text
    • https://cdn.sqhk.co/letijefa/e0icfha/ranking_das_selecoes_de_futebol_masculino.pdfIn PDF document text
    • https://bafexobis.weebly.com/uploads/1/3/4/0/134041027/3621261.pdfIn PDF document text
    • https://fofezuse.weebly.com/uploads/1/3/0/7/130739341/52161db3c7fdae5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452217/normal_5fda1cd28d57d.pdfIn PDF document text
    • https://cdn.sqhk.co/raninogozo/jdieTia/39212803715.pdfIn PDF document text
    • https://cdn.sqhk.co/delopomixaba/b11jghd/kendall_and_kylie_fight_kuwtk.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://s3.amazonaws.com/farezelof/nfl_power_rankings_bleacher_report_week_2.pdfIn PDF document text
    • https://s3.amazonaws.com/fusidejebi/c_member_function_template_parameters.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_off0000c8be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8BE 5296 bytes
SHA-256: 4fae4174f2e3b488fb5cbeddee314d9921f757fdca7a7055dc61448c752e1b63
font_01_sfnt_off0000da91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA91 10168 bytes
SHA-256: b75cd4e5cf0fc4a3123876607efcb162c8e5578417f359277c4996914183f63a
font_02_sfnt_off0000fd67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD67 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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