Malicious PDF — malware analysis report

Static analysis result for SHA-256 460f92c4c359b5df…

MALICIOUS

PDF

71.1 KB Created: 2021-02-26 11:40:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 54da14d8de3cbb4ead6cc2d219b7594a SHA-1: aef89654e5faee6f7d28144a49d826685fb03f20 SHA-256: 460f92c4c359b5df776cf4186ed49e44ca27f5f0903990653b28d28057e1400d
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://ponafet.ru/award?keyword=cloud+computing+companies+in+usa PDF link annotation
    • https://cdn.sqhk.co/guwuweri/VjjeJrh/word_collect_golden_apples.pdfIn PDF document text
    • https://bixoriwapavam.weebly.com/uploads/1/3/4/7/134731951/1022949.pdfIn PDF document text
    • https://cdn.sqhk.co/zasokolof/BSgegiU/the_original_play_phone_number.pdfIn PDF document text
    • https://cdn.sqhk.co/sopirisaset/dQeOjbB/cowboys_vs_zombies_mobile_game.pdfIn PDF document text
    • http://jadogaxarabu.mygamesonline.org/pageru.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465392/normal_600e8f2ae7702.pdfIn PDF document text
    • http://fotubobuwenapu.scienceontheweb.net/xixakapajenatiri.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499653/normal_5fca68c33c6e8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413005/normal_5ff2803f04b10.pdfIn PDF document text
    • https://cdn.sqhk.co/wenegifuteg/hhj0iby/arcade_game_orange_character.pdfIn PDF document text
    • http://lirinevewafa.mypressonline.com/martin_luther_king_jr_speech_place.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d963.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD963 5200 bytes
SHA-256: 089ff92a970ecafcf0a1abeb6d4e4bebbf822e0472a7e45208e3c8d9f2152b05
font_01_sfnt_off0000eaff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAFF 10784 bytes
SHA-256: fbf52751c7db5a5dfb9865f66296309aba79b3ca318af7d77d56d0ab7543de65