Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d66584f6c365087…

MALICIOUS

PDF

78.8 KB Created: 2020-11-24 21:50:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 67e49b9f806bfc1e1b7ced40321f150c SHA-1: 91a111f020d9ede6625115168ca6a7be423d27d2 SHA-256: 6d66584f6c36508705404268a1f3a8c682287a537e3f2aa69ab4a43820c82c3b
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://gettraff.ru/123?utm_term=square+toilet+seats+for+sale In PDF document text
    • https://samoxaposem.weebly.com/uploads/1/3/4/3/134361226/05c43186467a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420454/normal_5f9c19e73658e.pdfIn PDF document text
    • https://musisemikalig.weebly.com/uploads/1/3/4/6/134694348/mevesaluforo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wujafivabipo/excel_monthly_budget_template_xls.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c902208f-30b2-43ed-9113-108c49b7cd79/zanedusalivefububanofix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3400cc10-a03c-43b9-bdf6-5bdbebfc6479/myofascial_pain_and_dysfunction_trigger_point_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf768554-099c-4659-ae50-c63b8e2fc48e/vocalign_pro_4_vst_crack.pdfIn PDF document text
    • https://s3.amazonaws.com/pugomonapoxuxe/supavagosipogap.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/55872499068.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e19845c-26dd-42e2-b41a-788a61935571/.pdfIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/mapa_metro_brussels.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/1160524433.pdfIn PDF document text
    • https://s3.amazonaws.com/zufaxepixiguxax/tutufiwibugawotuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2324a83a-0692-4185-a190-9246e2050d68/nissan_armada_repair_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/rilexazejuzovep/translation_reflection_rotation_worksheet_grade_4.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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_off0000de96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE96 4992 bytes
SHA-256: 5bcb9d07b1543b5842f7a6b032c5b1e394767681ee3e8944140ea1476d71f566
font_01_sfnt_off0000efa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFA1 10696 bytes
SHA-256: 88f086969b5829283d787e4c94a86413a373d26a36d1eb212dbb640c92778ea2
font_02_sfnt_off00011446.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11446 17256 bytes
SHA-256: b79cfb25d830eb94ab9594afc1838aae2799f4fcce173d042f1dd03190cd485f

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