Malicious PDF — malware analysis report

Static analysis result for SHA-256 f64c0d1e6ceacabb…

MALICIOUS

PDF

65.9 KB Created: 2021-03-12 08:29:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 9be85753e0a759339cc829df313982b4 SHA-1: f9ba04026eb93f9dfcc6b780a76465bea32670e1 SHA-256: f64c0d1e6ceacabb66579817c4c15138c34c8b8d235a53ea7dde0f60e43f74ab
196 Risk Score

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.
  • 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/wix?keyword=2.2+enrichment+and+extension+answers PDF link annotation
    • https://xokebewogaxuwu.weebly.com/uploads/1/3/4/5/134588239/9990027.pdfIn PDF document text
    • http://dodajavux.scienceontheweb.net/10453698397.pdfIn PDF document text
    • http://wegaturagifo.getenjoyment.net/2006_chevy_equinox_oil_type.pdfIn PDF document text
    • https://pudisemibupar.weebly.com/uploads/1/3/4/0/134096773/3322372.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/jenagubadopi/35340292501.pdfIn PDF document text
    • https://s3.amazonaws.com/zeworibuzoza/yamaha_mg102c_power_supply.pdfIn PDF document text
    • https://s3.amazonaws.com/dovulavavo/pogufaxibaj.pdfIn PDF document text
    • https://a43ab9c2-5efb-4cee-ac06-b782a0f5e207.filesusr.com/ugd/4826f5_5145283e9caf478fb3a5ad839b69d4cf.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sowewazulejewi/toxitigamawitokefa.pdfIn PDF document text
    • https://5071cc05-3fa2-46b1-b944-d2523ca4b51d.filesusr.com/ugd/62e2c1_22d37fac419b4b48b4d3b2a1649d5b1c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rizijubovapuk/ravodof.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxuxemu/17371838293.pdfIn PDF document text
    • http://sevetise.rf.gd/53517309719.pdfIn PDF document text
    • http://pulutugorivexek.atwebpages.com/wood_top_table_with_black_metal_legs.pdfIn PDF document text
    • https://6d4a8fb0-9a8a-4850-8aa1-2b5706121c9a.filesusr.com/ugd/ff2e72_4e50b58c90a042958fefd57bc4c55a59.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/71591224368.pdfIn PDF document text
    • http://fadadopotonu.epizy.com/baratunde_thurston_how_to_be_black.pdfIn PDF document text
    • https://083189c9-8220-4687-a375-57be19a37228.filesusr.com/ugd/909b15_4f216bf911f642e0b1c49e4e751d9380.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fosagoba/velamamawe.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_off0000c6e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6E8 5376 bytes
SHA-256: b9a3ddca17dd9e26e93a6027b2765f9b76632b1d575ef0997e3fe54e05e17d57
font_01_sfnt_off0000d918.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD918 9604 bytes
SHA-256: c1a00f5f42426c0b5d7dab595e5d15090b270266c0ccf86df8ef2942df6ad02f

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