Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d142ea7d98d3827…

MALICIOUS

PDF

74.5 KB Created: 2021-02-28 19:59:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 909f4109e34591d053498798c2588ac8 SHA-1: 3639ec3e79e6dd3cd61a644d2df55dd14ff01a1c SHA-256: 2d142ea7d98d3827ea416b3572c15e290f0736e7362735ed0b697cb00a012d32
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://soxebez.ru/wix?keyword=free+steam+wallet+codes+no+survey+no+download PDF link annotation
    • https://nolaxefipox.weebly.com/uploads/1/3/4/7/134740184/zixavez_rezamijof_nixetafuxewebol.pdfIn PDF document text
    • https://cdn.sqhk.co/jadojibam/hak6XQm/wapowofagodewanakonubipon.pdfIn PDF document text
    • http://4escam-bot.online/bronchospasme_en_anesthesiehr5hk.pdfIn PDF document text
    • https://gorifimeti.weebly.com/uploads/1/3/6/0/136021085/9f4a16161e7.pdfIn PDF document text
    • https://cdn.sqhk.co/masamiwe/5iiuBcG/doom_2_master_levels_mephisto_s_mausoleum.pdfIn PDF document text
    • https://wodaxudufusan.weebly.com/uploads/1/3/0/8/130814186/fizoxivarinupun.pdfIn PDF document text
    • https://cdn.sqhk.co/riketumes/ghhiHwj/zajumeseseluzudemarogigo.pdfIn PDF document text
    • https://vifapuxup.weebly.com/uploads/1/3/4/0/134018045/pukagef_dojaxenomi_zonozinaxif_wawusibikiki.pdfIn PDF document text
    • http://pressit.fun/viduvisalewobesezubilirodtb8ge.pdfIn PDF document text
    • https://relulime.weebly.com/uploads/1/3/4/3/134384492/1000b1a.pdfIn PDF document text
    • http://winclean-shop.space/12008268783x402r.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/rerinago/alaska_berry_picking_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/fejatepudopito/kimofimojo.pdfIn PDF document text
    • https://s3.amazonaws.com/womirofop/tixopumube.pdfIn PDF document text
    • https://s3.amazonaws.com/lerezazo/sap_crystal_reports_for_windows_10.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_off0000e72f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE72F 5296 bytes
SHA-256: bfff22ef28de4c3ae63eb8e618438e47c44cee13edbf8c4ac6086650c7372ac9
font_01_sfnt_off0000f936.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF936 10468 bytes
SHA-256: ac38393818f9199cc7ab685847a1790fb5991ae93adac24f894d39d30d585e7c