Malicious PDF — malware analysis report

Static analysis result for SHA-256 78294e98056168c9…

MALICIOUS

PDF

83.0 KB Created: 2021-10-11 01:15:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-16
MD5: b13c6a908300c88285763bdc3f82f04b SHA-1: bccd7ac508878c3f981563ba963ce272232cea4c SHA-256: 78294e98056168c93856add93f2a40e17d23d34a05a4da5c4578d417db008d6c
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://crewmak.ru/uplcv?utm_term=introduction+to+chemistry+textbook+pdf PDF link annotation
    • https://weboonline.com/ckfinder/userfiles/files/narij.pdfIn PDF document text
    • http://www.kevimotor-rock.hu/files/files/61658885528.pdfIn PDF document text
    • https://childprotectionindia.com/lexcyberia/userfiles/files/71332214232.pdfIn PDF document text
    • https://gres-k.cat/userfiles/file/rurifutuwijofufojotaguzuw.pdfIn PDF document text
    • http://sakesushilakehavasu.com/uploads/files/49998665989.pdfIn PDF document text
    • https://aqualibramontois.be/fckdownload/file/pakabenofiwelu.pdfIn PDF document text
    • https://gedayapi.com/userfiles/file/vodijas.pdfIn PDF document text
    • https://ckd-otto.com/contents/files/11470552318.pdfIn PDF document text
    • https://www.theoakshealthcare.com/my_content/js/ckfinder/userfiles/files/gobiwus.pdfIn PDF document text
    • http://littlepearlspublishing.in/data/eimages/file/pajujiluruf.pdfIn PDF document text
    • http://www.iuoelocal870.com/kaizen/ckfinder/userfiles/files/22398882905.pdfIn PDF document text
    • http://effektfilm.de/files/file/bitob.pdfIn PDF document text
    • https://winpoasia.com/ckfinder/userfiles/files/jokiriviji.pdfIn PDF document text
    • https://homecareangels.ca/files/files/files/gepolofulelitifipipaza.pdfIn PDF document text
    • http://tramtronbetong.com/uploads/userfiles/file/65034456666.pdfIn PDF document text
    • http://daejonggyoyc.com/userfiles/file/20210915220557.pdfIn PDF document text
    • http://matchonusa.com/uploads/files/kipurelusonesusotimerowur.pdfIn PDF document text
    • http://harlit.com/upfiles/file/bopokexogakarifabudufux.pdfIn PDF document text
    • https://kitapkaplama.com/upload/ckfinder/files/nubilanajabaxinoravi.pdfIn PDF document text
    • https://gimenezricarte-deltabogados.com/ckfinder/userfiles/files/zewosadubirojovademaf.pdfIn PDF document text
    • http://uralcomservis.ru/crn_fls/crn_files/wiwabamanotakutusevo.pdfIn PDF document text
    • http://www.vljainandco.com/userfiles/files/11544582209.pdfIn PDF document text
    • https://luxurybaths.marblobaths.ph/app/webroot/img/files/redimifopopotodegelofiwit.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA76 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f288.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF288 19140 bytes
SHA-256: bd19e4c0b6760889ca0fb3fb3f5fe8b2d9bc8eda08d40bb609393a0b58e0a7e2
font_02_sfnt_off00012458.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12458 11176 bytes
SHA-256: 33fbfe99d7dbeb2c10c685c25fba0a09e1dd9fed5249ed846a42929a45a151bf

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