Malicious PDF — malware analysis report

Static analysis result for SHA-256 64c84951ef8892d9…

MALICIOUS

PDF

68.4 KB Created: 2021-02-23 19:29:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 47f2f34339ef1898622e47227e812f4e SHA-1: 3c7a0f9066e9a3902584d7cff3c4cf4529d62a8a SHA-256: 64c84951ef8892d92add66840bef4f46084ffe09808874de8abb62af52cd90a8
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://maypoin.ru/wix?keyword=adobe+audition+cs3+free+download+with+crack PDF link annotation
    • https://japafapu.weebly.com/uploads/1/3/1/4/131437770/vitaxub.pdfIn PDF document text
    • https://cdn.sqhk.co/jirudumom/ghjlUCE/cowboy_caviar_recipe_pioneer_woman.pdfIn PDF document text
    • https://zuwadakake.weebly.com/uploads/1/3/4/6/134664894/vanud_zuliki.pdfIn PDF document text
    • https://cdn.sqhk.co/wabajevebe/chgyhh0/98976984367.pdfIn PDF document text
    • https://cdn.sqhk.co/monasomeb/iiidhfq/26623398133.pdfIn PDF document text
    • http://sofoviwov.iblogger.org/fozenedafosuxedetar.pdfIn PDF document text
    • https://cdn.sqhk.co/salavogi/Sghrigj/18657919583.pdfIn PDF document text
    • https://cdn.sqhk.co/pilozarager/ghdRyjd/armello_special_edition_ps4_review.pdfIn PDF document text
    • https://cdn.sqhk.co/jaxubefe/Khf8hhE/87902032899.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/tugafebip/ludovico_einaudi_primavera_violin_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/solonebosop/farm_animals_worksheet_for_toddlers.pdfIn PDF document text
    • http://ginokaze.epizy.com/kuxijigogovokepupu.pdfIn PDF document text
    • https://s3.amazonaws.com/wupiwupiwot/where_to_refill_sodastream_bottles.pdfIn PDF document text
    • https://s3.amazonaws.com/xonaxevetaf/45609525413.pdfIn PDF document text
    • http://raselitabak.epizy.com/9693709751.pdfIn PDF document text
    • https://s3.amazonaws.com/zarevizebi/48654875009.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_off0000cf45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF45 5560 bytes
SHA-256: 7b31b465a66f321bafa68984aa78be1d0a25e1c47b44fb8679a4d0256c04335f
font_01_sfnt_off0000e236.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE236 9996 bytes
SHA-256: 9e87ab40e0e6300e5606d6602d1b560e6b79de95e69c2991b7de215d8503aa74