Malicious PDF — malware analysis report

Static analysis result for SHA-256 97c7fccf7740c621…

MALICIOUS

PDF

76.2 KB Created: 2021-03-29 14:27:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: e614e6b1de1d5174a8145c4bd1a34712 SHA-1: 50343ef2a913f9f0c72ae711c769050a0958e216 SHA-256: 97c7fccf7740c621dde1e82c267fae2468b8405b9d6bdd06da25c29011102b4e
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 0.9991

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://soxebez.ru/wix?keyword=governor+ratcliffe+descendants PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387925/normal_601a596bc046a.pdfIn PDF document text
    • http://legendnat.space/why_does_the_bible_say_not_to_judge_others65n65.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426424/normal_605c5abf35ae4.pdfIn PDF document text
    • http://healsmall.space/representative_payee_online_formcfy8c.pdfIn PDF document text
    • https://cdn.sqhk.co/wizokawoxo/iDNjizB/tarot_cards_for_sale_etsy.pdfIn PDF document text
    • http://golden-bridge.pro/when_can_you_get_your_drivers_permit_in_arkansaseesfj.pdfIn PDF document text
    • http://trening-ekaterinodar.ru/formato_de_carta_responsiva_para_trabajar47zl1.pdfIn PDF document text
    • http://d-youtube.com/47646961753dujil.pdfIn PDF document text
    • http://opendouche.xyz/what_is_the_process_of_brain_development4u995.pdfIn PDF document text
    • http://seomagnat1.online/samepunivafajuladakwmfrr.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479441/normal_60097933a18f4.pdfIn PDF document text
    • https://cdn.sqhk.co/jozunufap/pTheFjc/rodabudupokemiwudawedanel.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382430/normal_60046e9befe12.pdfIn PDF document text
    • http://lnstagram-blue-ticks.com/what_are_the_scales_of_the_mmpi_2gk6c9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444622/normal_5ff831ef36bf4.pdfIn PDF document text
    • http://portkamesto.site/34175303815kvrp.pdfIn PDF document text
    • http://rankingcoach-apps.com/363554215575xyhk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470400/normal_6049c5081bcbb.pdfIn PDF document text
    • https://cdn.sqhk.co/bulelovuroga/mOgeOhc/54829065964.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/wupixufekijax/home_agreement_format_in_marathi.pdfIn PDF document text
    • https://s3.amazonaws.com/firudegix/iv_administration_guidelines_for_nurses.pdfIn PDF document text
    • https://s3.amazonaws.com/mefovu/los_renglones_torcidos_de_dios_letra_mago.pdfIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/25612426648.pdfIn PDF document text
    • https://s3.amazonaws.com/fuvidokibet/15506622190.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE11 5108 bytes
SHA-256: 59319ef3144d6f9524d18d79b7b708f727775a0df821d26f8aefdf6509fea507
font_01_sfnt_off0000ff8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF8C 10460 bytes
SHA-256: 0974876066956a6fd4dd8aeda3c05d970946c2a82a66acf970d771a3c0e80aaa

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