Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c6506c867cf8408…

MALICIOUS

PDF

71.4 KB Created: 2021-02-18 09:46:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 251b2bd219e507b16463e82f53dc14d8 SHA-1: 98df848b02f99cc49b78bb1ae1201f6bb9366d6d SHA-256: 5c6506c867cf840856dd6c316f773159d954cfbac6de55bdbf97566490a09c93
254 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
  • 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/wix?keyword=wayang+spellhunter+d20pfsrd In PDF document text
    • https://pevigegokepos.weebly.com/uploads/1/3/4/3/134366184/4150951.pdfIn PDF document text
    • https://mubajodopiwal.weebly.com/uploads/1/3/1/4/131454521/5559582.pdfIn PDF document text
    • https://pabaxovazat.weebly.com/uploads/1/3/4/3/134323574/3463321.pdfIn PDF document text
    • http://reduslim-italia.website/phase_10_card_game_online_with_friendsvuos9.pdfIn PDF document text
    • http://devlp.design/5933057685fta00.pdfIn PDF document text
    • https://puraxexi.weebly.com/uploads/1/3/4/7/134718411/04c277147723aef.pdfIn PDF document text
    • http://fitit.space/bingo_game_template_printablesbwkd.pdfIn PDF document text
    • http://ratubave.22web.org/adverbs_of_place_and_time.pdfIn PDF document text
    • http://gramnews.xyz/94656190677r3z78.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/fevobelijogal/dazilegupejerukedazu.pdfIn PDF document text
    • https://s3.amazonaws.com/tiluwisulepam/41716516855.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/69367484605.pdfIn PDF document text
    • http://jovebaben.epizy.com/23764079748.pdfIn PDF document text
    • http://lejokadedemixo.rf.gd/jawekazudafezamemexa.pdfIn PDF document text
    • https://s3.amazonaws.com/gifojuxaxeva/magellan_global_equities_fund_fact_sheet.pdfIn PDF document text
    • http://wuwepapose.epizy.com/bet_informal_definition.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_off0000d855.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD855 5692 bytes
SHA-256: 5fc59135ff6309cf349fc05610d8ee855a410c9b2c12fc3225c1b3d90f1808cf
font_01_sfnt_off0000ebc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBC8 10880 bytes
SHA-256: 7f944d9c8188c1095a2304ce3f934631431967380334a6aaf8accdbbd423fcb1