Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0a8c9086845bfa3…

MALICIOUS

PDF

81.0 KB Created: 2021-02-27 00:29:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 48630913d078799140ee9d40089587d2 SHA-1: a54aa5cc5dd299e9a071cc476168d53a63ac3509 SHA-256: f0a8c9086845bfa320cf7e13a212f7222d2ebd81422d404a6da640556b717dc8
186 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.
  • 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.
  • 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://fokemale.ru/aws?utm_term=financial+accounting+tools+for+business+decision+making+8th+edition+answer+key PDF link annotation
    • https://talogaxuzule.weebly.com/uploads/1/3/4/5/134596774/wijosulod-fejewupe-rovez.pdfIn PDF document text
    • http://kutatit.getenjoyment.net/supernatural_cast_season_13.pdfIn PDF document text
    • https://cdn.sqhk.co/fukonovum/jOhjoUY/i_am_become_death_quote_bhagavad_gita.pdfIn PDF document text
    • https://cdn.sqhk.co/dokukavifig/svkibgf/jolifeko.pdfIn PDF document text
    • http://wapividazofar.scienceontheweb.net/56538519310.pdfIn PDF document text
    • https://cdn.sqhk.co/nunemiziku/ggjjd5K/wood_joints_book.pdfIn PDF document text
    • https://pajoxobonojizo.weebly.com/uploads/1/3/4/7/134702513/22da3dc23d30.pdfIn PDF document text
    • https://cdn.sqhk.co/zaviresodew/7Ljghay/lasunanijezaj.pdfIn PDF document text
    • https://cdn.sqhk.co/vopiruwikil/ijempGb/roborovski_hamster_life_expectancy.pdfIn PDF document text
    • https://sabexezoguge.weebly.com/uploads/1/3/1/4/131483217/vilotiwa.pdfIn PDF document text
    • https://cdn.sqhk.co/jinubodilev/gcOjgje/salav.pdfIn PDF document text
    • https://lekaretuzej.weebly.com/uploads/1/3/0/7/130738752/zizatamew_zuwomoxud.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/zupenafud/83833550447.pdfIn PDF document text
    • http://kuxoxokazutuv.myartsonline.com/mirog.pdfIn PDF document text
    • https://s3.amazonaws.com/wutogugej/sajegoxigifabotigilaj.pdfIn PDF document text
    • http://nokejufesuw.atwebpages.com/22173774506.pdfIn PDF document text
    • https://s3.amazonaws.com/tugabijenovili/amazon_quiz_answers_win_15000_today.pdfIn PDF document text
    • https://s3.amazonaws.com/vebogotexaf/porcentaje_de_cesareas_en_mexico_2018.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_off0000fc41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC41 5980 bytes
SHA-256: 13e404334914cef981d7e302ea12131cfd352e42731b7a63b48d605e4fda4f79
font_01_sfnt_off00011087.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11087 11096 bytes
SHA-256: b305e84fea9837c9728a5d0847fb5a77acc07284dcf8796feeb47e5220da74df

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