Malicious PDF — malware analysis report

Static analysis result for SHA-256 cce8dc247f62d117…

MALICIOUS

PDF

77.3 KB Created: 2021-02-03 04:29:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 0830253998699aaf9e3ed15cc5d99d17 SHA-1: aa978bd76decefab63273bf3440f1254dc81ee95 SHA-256: cce8dc247f62d1170f74f05dc460da960b36abd5af6db6851e1b50732b21b022
196 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
  • 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://seumenha.ru/wb?keyword=ak%2047%20telugu%20movie%20songs PDF link annotation
    • https://mumasibomogavap.weebly.com/uploads/1/3/1/0/131070301/1fa74984119e.pdfIn PDF document text
    • https://belexikezetuvom.weebly.com/uploads/1/3/0/7/130775063/piwado.pdfIn PDF document text
    • https://limofagis.weebly.com/uploads/1/3/4/6/134640762/bejamuna.pdfIn PDF document text
    • https://zowajapizuxazo.weebly.com/uploads/1/3/0/9/130969341/furixezudasatuken.pdfIn PDF document text
    • https://cdn.sqhk.co/vawadawuleja/ijdxCao/toroxobijanaligade.pdfIn PDF document text
    • https://cdn.sqhk.co/fatidizeru/ibgcgeC/simple_present_literary_definition.pdfIn PDF document text
    • https://cdn.sqhk.co/pananumujo/3fCicne/lock_screen_wallpaper_hd_anime.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/fadupazageraf/52863176745.pdfIn PDF document text
    • https://s3.amazonaws.com/tokit/bsc_magazine_august_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/toniseligiwuzux/59635197522.pdfIn PDF document text
    • https://s3.amazonaws.com/gavobawum/vba_numberformat_2_decimal_places.pdfIn PDF document text
    • https://s3.amazonaws.com/dukavunivifa/26932599999.pdfIn PDF document text
    • https://s3.amazonaws.com/wizidimawag/govudiga.pdfIn PDF document text
    • https://s3.amazonaws.com/puretulenuza/wafomitim.pdfIn PDF document text
    • https://s3.amazonaws.com/resisuna/22369434581.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_off0000f21a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF21A 4980 bytes
SHA-256: 4b2f56855a5e79e719595c1304cca4a882c59972313eb2b936f4fb7cd4eb7ffd
font_01_sfnt_off00010321.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10321 11108 bytes
SHA-256: d91b2a7621d86d768702b43ea29aab20ae6f01ea7956018e6d0768bbefa84ae9