Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a98b684b889c49e…

MALICIOUS

PDF

71.0 KB Created: 2021-01-27 20:48:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 6acf6f2d80550fab69cddb1d80ac1844 SHA-1: e54b43bf45ad0dc823b5b6dc79fef574b03478dc SHA-256: 6a98b684b889c49e507a721c3238595de72fe67ad9d11610ef18b3fa61df75dd
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffnew.ru/wb?keyword=leatherman%20wave%20multi%20tool PDF link annotation
    • http://laura-egorova.ru/set_individual_ringtones_galaxy_s9z6e84.pdfIn PDF document text
    • https://cdn.sqhk.co/pilozarager/gUfghSv/nelerete.pdfIn PDF document text
    • https://wetolobumusu.weebly.com/uploads/1/3/4/5/134579125/63eda9189.pdfIn PDF document text
    • https://xumusozopojuvuj.weebly.com/uploads/1/3/1/3/131398507/d9f50bbff6f.pdfIn PDF document text
    • https://cdn.sqhk.co/felinavaw/jcjhgc8/11365550222.pdfIn PDF document text
    • https://cdn.sqhk.co/kizulajeli/9MoUrAZ/mr_love_queen_s_choice_manga_online.pdfIn PDF document text
    • https://cdn.sqhk.co/xefijumu/idv5eYN/nostalgia_cotton_candy_maker_replacement_extractor_head.pdfIn PDF document text
    • http://zootime.store/woxubekelojunolelfpfp4.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/pilazi/holtby_injury_report.pdfIn PDF document text
    • https://s3.amazonaws.com/vavapekadoliti/print_booklet_indesign_to.pdfIn PDF document text
    • https://s3.amazonaws.com/nutanigonu/equations_with_variables_on_both_sides_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/gotitibekovi/14192810703.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawexawinogad/87713622159.pdfIn PDF document text
    • https://s3.amazonaws.com/jozaponi/xuzusemazigakagodoginol.pdfIn PDF document text
    • https://s3.amazonaws.com/wovitiku/admin_officer_interview_questions_and_answers.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_off0000da49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA49 4840 bytes
SHA-256: 2766688e3da89fe62acb36b51765313611133e6a757817d245eed788ea1e18cb
font_01_sfnt_off0000eaa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAA6 10828 bytes
SHA-256: 6018dff1efff59064eafc89530da86b0aa1c8fd4a3e43df6e00ecebd9195f920