Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9e255080f72e8ba…

MALICIOUS

PDF

89.3 KB Created: 2021-04-23 03:46:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: f15c8611206fb58dc849a9e282a1aa06 SHA-1: 11a576985f9720917562f84377d78566aff0e72c SHA-256: f9e255080f72e8ba1390626b1a125eec62150ad3243660d1b825844a6aa2b53b
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. 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 0.9997

Heuristics 5

  • 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.
  • 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://ponafet.ru/strik?utm_term=maya+angelou+accomplishments PDF link annotation
    • http://copyright-infringement.business/53302973216lv7a.pdfIn PDF document text
    • http://fuvesozufinefi.medianewsonline.com/11059281104.pdfIn PDF document text
    • http://galufixagomedo.getenjoyment.net/best_programming_books.pdfIn PDF document text
    • http://dabukim.mygamesonline.org/algorithm_complexity_analysis.pdfIn PDF document text
    • https://cdn.sqhk.co/fekesolip/jdbjhT0/78027033899.pdfIn PDF document text
    • https://cdn.sqhk.co/balaragu/iSsjjia/winilozumorurisawuwavutum.pdfIn PDF document text
    • http://vavazexowupex.medianewsonline.com/mabitak.pdfIn PDF document text
    • http://danifewikusi.scienceontheweb.net/livadakagagukusuji.pdfIn PDF document text
    • http://rumafelaneli.mygamesonline.org/nopunokemumupelokogudo.pdfIn PDF document text
    • http://austritkfa.com/craftsman_6.75_high_wheel_trimmerymbic.pdfIn PDF document text
    • http://reliables.ru/guzore0e665.pdfIn PDF document text
    • http://ratixopawem.mypressonline.com/cancer_espinocelular.pdfIn PDF document text
    • http://thepropheticapp.com/arturia_microbrute_redkrnx6.pdfIn PDF document text
    • http://dostafood.xyz/world_war_z_scriptkfbhy.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/a85a8fae-667a-4040-b917-11a65ed9b032/binifufugekaditizixijib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6f1e4cc-7d5d-4132-bc38-807af488ad7f/11966839674.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc334555-54c0-443f-b703-2d69b086f8b6/52799196418.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d34b1f01-2578-48cc-94d2-6721909f7c57/4220968624.pdfIn PDF document text
    • http://kavibajegis.onlinewebshop.net/sears_kenmore_sewing_machine_desk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0ac28b8-bb3e-40c7-ba4d-1531a1efa85e/how_to_set_an_atomic_clock_manually.pdfIn PDF document text
    • http://wegamaluperetuj.atwebpages.com/55575153921.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012054.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12054 5356 bytes
SHA-256: 51379f37ca1f1424023ab13584797cd4d6b156f5768729fe477e81cac45e7b62
font_01_sfnt_off00013281.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13281 11104 bytes
SHA-256: 745490e2687fd1d562dddba756da07a01566a6a51ad7ae9dabab4053a2112612

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