Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e6f7731d0408182…

MALICIOUS

PDF

70.3 KB Created: 2021-02-16 00:58:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 95aa1cda26f2db157a2b98cba0d5446e SHA-1: e34c1bf54129d1fe3687817cd18dd152cbbf1286 SHA-256: 2e6f7731d04081821898e718a414c58060b475ad0acb5c8e0fb48feb50053eaf
254 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/strik?utm_term=epson+artisan+730+wireless+setup In PDF document text
    • https://cdn.sqhk.co/ramowejub/jaghH4s/wumojarajubamanu.pdfIn PDF document text
    • https://cdn.sqhk.co/bebiwamulanu/2RimVje/roxusefinewebapi.pdfIn PDF document text
    • https://nifakisafuzum.weebly.com/uploads/1/3/0/7/130775286/4551327.pdfIn PDF document text
    • https://tizevilujiv.weebly.com/uploads/1/3/1/4/131406709/dofosuk.pdfIn PDF document text
    • https://borerejo.weebly.com/uploads/1/3/4/0/134040615/sepiruwevo.pdfIn PDF document text
    • https://cdn.sqhk.co/ganuniwiku/ja8S5ih/netflix_movie_download.pdfIn PDF document text
    • https://cdn.sqhk.co/dukosisevu/awjbhjP/road_legal_crosser_125_finance.pdfIn PDF document text
    • https://rejukikigukaw.weebly.com/uploads/1/3/5/3/135387704/majesosofogiv-jofotidawuze-wunefuwibozeka-vigavu.pdfIn PDF document text
    • http://on-arenas.com/678468352509sbw4.pdfIn PDF document text
    • https://cdn.sqhk.co/sojowidaz/dhdidih/nilugafuzesafezonavi.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/widofafane/71881011334.pdfIn PDF document text
    • https://s3.amazonaws.com/muvemasoxaji/android_image_button_background_color_transparent.pdfIn PDF document text
    • https://s3.amazonaws.com/jebupofedijakuk/free_bluestacks_apk_handler.pdfIn PDF document text
    • https://s3.amazonaws.com/jivala/sidekikagi.pdfIn PDF document text
    • https://s3.amazonaws.com/xeropizuwe/magic_call_app_uptodown.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_off0000d640.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD640 5248 bytes
SHA-256: 6ea7da3ce73cd0434d47f22d38a834eb0981f10c142ac9fb000b0cbd7245bac5
font_01_sfnt_off0000e841.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE841 10600 bytes
SHA-256: ba1bbd97a0ab1ed9ce09066aefa6d21b06dc6b614d9b43a2096298f561791ce0

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