Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c81748953abb5d4…

MALICIOUS

PDF

301.2 KB Created: 2022-03-14 01:49:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-04
MD5: 5295ccc719bf9f228cdc18b6aa6bff2e SHA-1: d401c068280835efc2cdc751ebcc042d75ebedc7 SHA-256: 2c81748953abb5d46c364f3387ae10b80d26df4feade2246bbc65bb8abf584c5
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9577

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
  • 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.
  • 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://fecuq.co.za/XSRYdR1H?utm_term=mla+works+cited+practice+worksheet PDF link annotation
    • https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/161fa58852fab2---51871051700.pdfIn PDF document text
    • http://philipp-haberland.de/images/upload/file/jododojizegavimuvuxa.pdfIn PDF document text
    • http://files.ibiza-ferien.de/file/punozuwijufopodopo.pdfIn PDF document text
    • http://nutrizionisti.eu/public/thread/risorse/file/navuxegofodekafap.pdfIn PDF document text
    • http://oa30us.com/userfiles/file/suzokamabelepikizolo.pdfIn PDF document text
    • https://urudolfa.sk/upload/files/bobifinulufeziwixosuvuxov.pdfIn PDF document text
    • https://ydyb.com/filespath/files/20220308050450.pdfIn PDF document text
    • http://flexibordj.com/app/webroot/js/kcfinder/upload/files/96220344332.pdfIn PDF document text
    • https://barrier.exma.cl/ckfinder/userfiles/files/33133475945.pdfIn PDF document text
    • https://landviewdesign.com/userfiles/file/99375072235.pdfIn PDF document text
    • https://hebatkeren88.com/contents/files/gorurizilidowusopubepefu.pdfIn PDF document text
    • http://pinzimoniofiumicino.eu/userfiles/files/97260653074.pdfIn PDF document text
    • http://realcomfort.ru/content/upload/file/32959746056.pdfIn PDF document text
    • https://remoteyourstaff.com/calisma2/files/uploads/senolak.pdfIn PDF document text
    • https://jmcoverseaspvtltd.com/uploads/files/27822737779.pdfIn PDF document text
    • http://abb-impuls.su/kcfinder/upload/files/kizukogulefixorewat.pdfIn PDF document text
    • http://haiqi-machine.com/d/files/62384251962.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_off00044491.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44491 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00045bb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x45BB1 10676 bytes
SHA-256: 32b3bd075dc3561345d69f4151fb3ce9465e195ccbec92d98b06bfb54d7e74e2
font_02_sfnt_off00047463.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47463 18608 bytes
SHA-256: 7a199c8af160f38f1fd1e75e9a93b6e2a24250f1650b97286aff32627fba82f6