Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc3ccbd2b081c283…

MALICIOUS

PDF

71.5 KB Created: 2021-02-19 21:20:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ba18ad701b4903c0b9872341a31eae24 SHA-1: 331ddf4cd5100c684394d54544d8780af48e8582 SHA-256: cc3ccbd2b081c28310d7810de11d8b31062f24211f95e5af006b075982a69a77
244 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/wix?keyword=reinos+de+espa%25C3%25B1a In PDF document text
    • http://ritual-venki.online/31721033956fxyq0.pdfIn PDF document text
    • http://coolvdomaion.online/nikipomajbwhes.pdfIn PDF document text
    • http://keto-menu.online/pulanikuluxawume6fvu8.pdfIn PDF document text
    • http://khanapoorti.com/basketball_wallpapers_hdsqzv7.pdfIn PDF document text
    • http://podarokinsta.online/funky_karts_game_download_for_pcp2mw4.pdfIn PDF document text
    • https://cdn.sqhk.co/genizataxom/WF6lshd/52578264076.pdfIn PDF document text
    • https://cdn.sqhk.co/gukokefa/jggdSje/pastel_color_block_old_skool_vans.pdfIn PDF document text
    • https://cdn.sqhk.co/fuludasowipu/dh1gm4b/zaseguzobozawatugusipo.pdfIn PDF document text
    • https://tujilebofali.weebly.com/uploads/1/3/5/3/135398949/julitifipararew-daxeko-lifirenekano.pdfIn PDF document text
    • https://cdn.sqhk.co/tizarina/vhjhdii/fogoxujofe.pdfIn PDF document text
    • https://pananufizusa.weebly.com/uploads/1/3/4/4/134445813/bapafofonedi_xotuse_japile.pdfIn PDF document text
    • https://xifalazixaxidig.weebly.com/uploads/1/3/0/8/130874217/2672292.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/vunizi/como_fazer_um_molho_rapido_para_macarro.pdfIn PDF document text
    • https://s3.amazonaws.com/domegagowevag/samsung_m2880fw_toner.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_off0000da00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA00 5044 bytes
SHA-256: 65119857f44ff0cda8005203f58f002e48071df94b5840daef3f609c91293298
font_01_sfnt_off0000eafe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAFE 11508 bytes
SHA-256: 2efd42d2f195c2685a6ea01e84bd9e575c1026ee4d6d489f567ea90818958d08

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