Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7f468fcb9ad3c48…

MALICIOUS

PDF

70.8 KB Created: 2021-02-14 17:46:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: e74c08760eff71bfe06ee0d1e2844633 SHA-1: 5343e28475714a9dae70c020ea0918924fc87640 SHA-256: c7f468fcb9ad3c48792b582b368234c62f77948103d951b34f57f8f283904fb9
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://jottigo.ru/wb?keyword=focus%20pdca%20template%20doc PDF link annotation
    • http://allfreebets.ru/246117119429yb9y.pdfIn PDF document text
    • http://govnososal.xyz/account_balance_definition_dictionarystgur.pdfIn PDF document text
    • http://opssmall.space/pebidunudawepaxaxupurok00je5.pdfIn PDF document text
    • http://buyervannakupitvsem.xyz/xagemefe5ggv.pdfIn PDF document text
    • http://form-lnstagramverifiedbadges.com/fanuc_r30ib_maintenance_manualhl7bk.pdfIn PDF document text
    • http://tigesonepovar.66ghz.com/biselab.pdfIn PDF document text
    • http://peludofnor.fun/free_appellate_brief_template_wordkn7jg.pdfIn PDF document text
    • https://feraresafobigim.weebly.com/uploads/1/3/0/8/130813798/furezisalusopu_jovogo.pdfIn PDF document text
    • http://covidcapsule.world/sagejebde0bp.pdfIn PDF document text
    • http://triple-doska6.club/40577760222vlsmc.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/wizidimawag/29848027089.pdfIn PDF document text
    • https://s3.amazonaws.com/fajetufekejo/blackberry_9900_flashlight_app.pdfIn PDF document text
    • https://s3.amazonaws.com/memexelu/dutika.pdfIn PDF document text
    • https://s3.amazonaws.com/lepefi/31609254835.pdfIn PDF document text
    • https://s3.amazonaws.com/dopugaxelelema/rotuguvawapolitowaweg.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_off0000d96e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD96E 5076 bytes
SHA-256: 37f23d706aa48e0cf81cd3fc5097a0886b43e207887d0d97153e4c55b3deed29
font_01_sfnt_off0000eaa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAA6 10728 bytes
SHA-256: 1947d0339ed56aaed84039bd2a812576025dd9a599080fd546a51520eb6208cb