Malicious PDF — malware analysis report

Static analysis result for SHA-256 f08e8dcdc2dab713…

MALICIOUS

PDF

73.1 KB Created: 2021-02-25 00:04:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 839aec445627692c7a95534a57eebff7 SHA-1: 2316ddd18da5edfbe9a98809bbb7fa37b7eb04f6 SHA-256: f08e8dcdc2dab713b549beb7f2c92b7db801c7285523a54ceec22db5299d268c
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://baarspo.ru/wix?keyword=marion+county+dmv+number PDF link annotation
    • http://xiwakaravivomik.scienceontheweb.net/kalemawideroboko.pdfIn PDF document text
    • https://cdn.sqhk.co/gowamojon/fjiXU8f/espn_mlb_power_rankings_august_31.pdfIn PDF document text
    • https://cdn.sqhk.co/salenasova/inGa4ij/marketing_strategies_for_the_business-_to-_business_market.pdfIn PDF document text
    • http://mikovil.mywebcommunity.org/gakufuzojitililokimeni.pdfIn PDF document text
    • https://jukorupojos.weebly.com/uploads/1/3/5/3/135344641/3bfb7.pdfIn PDF document text
    • http://feldhaus-klinker-plitka.ru/bel_canto_technique4l1nj.pdfIn PDF document text
    • http://xoxuvajes.mywebcommunity.org/jvc_digital_video_camera_gr-d340ek_charger.pdfIn PDF document text
    • https://cdn.sqhk.co/xarozowuzosa/hjhhfBf/80549155474.pdfIn PDF document text
    • https://cdn.sqhk.co/nogorodizet/ehibuoi/underworld_werewolves_evolution.pdfIn PDF document text
    • https://cdn.sqhk.co/gigemuji/gXdgcqe/33473737857.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/jovekus/vudosis.pdfIn PDF document text
    • https://s3.amazonaws.com/dotivaf/zupuneboxepizotapoj.pdfIn PDF document text
    • https://s3.amazonaws.com/kakekojezutok/xezefoxiwininebi.pdfIn PDF document text
    • http://nojikigor.myartsonline.com/allophones_of_one_phoneme.pdfIn PDF document text
    • https://s3.amazonaws.com/kozibowisenatu/naxif.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/convert_to_editing_word_document.pdfIn PDF document text
    • http://jabodegodonirad.atwebpages.com/13046712946.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_off0000e22e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE22E 5184 bytes
SHA-256: a51331a6d17ca4b36b35a23bec1b899f6bcf09a36e88ca85c127b3ea2f13c136
font_01_sfnt_off0000f3d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3D1 10528 bytes
SHA-256: edd77c224ae0daf65fa49a4e4fd8c3143c34c69a9034fafa71c57b7fae8a2c39