Malicious PDF — malware analysis report

Static analysis result for SHA-256 5200d1f696683e71…

MALICIOUS

PDF

75.7 KB Created: 2021-02-03 02:06:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: f8ed180a478cff7641b3b7e8f74f4029 SHA-1: e53fb9910df4e5a3f54401a6e795e02fc4ae6179 SHA-256: 5200d1f696683e71b448a4348c224d948971549504a12a7dc90b8dc8a91dc071
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://baarspo.ru/infin?keyword=joomla+templates+free+blog PDF link annotation
    • https://cdn.sqhk.co/datagemop/iagfgOf/36694852605.pdfIn PDF document text
    • https://befufagu.weebly.com/uploads/1/3/1/3/131384284/6900692.pdfIn PDF document text
    • http://nulonelam.66ghz.com/36573221438.pdfIn PDF document text
    • https://kawuzuvom.weebly.com/uploads/1/3/1/3/131379118/7929816.pdfIn PDF document text
    • http://luzikudejijes.22web.org/gitlab_merge_request_template_title.pdfIn PDF document text
    • http://gramnews.xyz/welding_skills_workbook_answershexid.pdfIn PDF document text
    • http://expressvpn.store/download_death_tour_racing_action_gamef9zmp.pdfIn PDF document text
    • https://pirebuvix.weebly.com/uploads/1/3/2/7/132710697/b5890b42.pdfIn PDF document text
    • http://xapefefulonexir.22web.org/2870173162.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/vabemavuputenif/3904494383.pdfIn PDF document text
    • http://nonosolagosev.epizy.com/25949043285.pdfIn PDF document text
    • https://s3.amazonaws.com/pivetuzadujo/symantec_dlp_ocr_sizing_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/reaching_and_teaching_students_who_hurt.pdfIn PDF document text
    • http://bemuvubovewe.epizy.com/reformas_borbonicas_economicas_y_administrativas.pdfIn PDF document text
    • https://s3.amazonaws.com/fekazudabo/dream_league_soccer_barcelona_2019_forma.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_off0000ecc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECC7 5348 bytes
SHA-256: 205d2e696a64be943ae9c2407b5dd6d0e6ced01e8743116e8c0d898438b699df
font_01_sfnt_off0000fee0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEE0 10248 bytes
SHA-256: 18f4540d02aa6283b202fbde56d0256ebc2589fd3810f932a5cfe618e6b67973