Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa8e1ad80e363054…

MALICIOUS

PDF

232.6 KB Created: 2021-12-31 03:00:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-07
MD5: a250ecfb7431bf04a5911ae530f618a1 SHA-1: 36f3c64de1be8ddf65f9785626b546fdfc78baed SHA-256: aa8e1ad80e36305499151b1d06871b4032d750cb440bd0d4814725cc1b951595
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8582

Heuristics 5

  • 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.
  • 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://smidgel.ru/uplcv?utm_term=php+header+redirect+after+form+submit PDF link annotation
    • http://siblom.ru/files/upload/file/11110877979.pdfIn PDF document text
    • http://s8radziejowice-paszkow.pl/userfiles/file/50068280333.pdfIn PDF document text
    • http://swvocal.com/data/se2/file/46195653667.pdfIn PDF document text
    • http://buyyoutubesubscribers.com/ci/userfiles/files/rebop.pdfIn PDF document text
    • https://samsungvrvklima.com/upload/ckfinder/files/31009717556.pdfIn PDF document text
    • http://tehpromyar.ru/media/file/28225854805.pdfIn PDF document text
    • https://raghuvirtrading.com/userfiles/file/nudezebirudazobu.pdfIn PDF document text
    • http://arebiatours.com/uploads/files/dabewetoturexilatozuge.pdfIn PDF document text
    • http://studiotecnicodavico.eu/userfiles/files/xexikurolosaxow.pdfIn PDF document text
    • http://alacartedesign.de/userfiles/file/48787172551.pdfIn PDF document text
    • http://www.kroonzuivel.nl/ckfinder/userfiles/files/32930854298.pdfIn PDF document text
    • https://lexconsulting.ro/webroot/files/media/mefobagefizeb.pdfIn PDF document text
    • https://limsurempat.com/contents/files/97009850834.pdfIn PDF document text
    • https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/cb7beaf8109642b02861965080d8d385/malifa.pdfIn PDF document text
    • http://vinacafe-dalat.com/Images_upload/files/degupoworuxekigorux.pdfIn PDF document text
    • http://scantech3d.com/files/2160417379.pdfIn PDF document text
    • http://herodumpsterrental.com/wp-content/plugins/super-forms/uploads/php/files/d1101c8958782b6fbf84a96b9d06dd90/vurebusaguxofolemogazo.pdfIn PDF document text
    • https://cs168.tw/upfiles/editor/files/jopekuwalivibizidiwopizes.pdfIn PDF document text
    • https://almavilag.hu/files/files/paritaw.pdfIn PDF document text
    • http://rdmsrl.it/userfiles/files/57881470283.pdfIn PDF document text
    • http://canadianartistic.com/userfiles/file/9986079458.pdfIn PDF document text
    • http://tavaszitura.eu/userfiles/files/42139176668.pdfIn PDF document text
    • http://garderoba.sk/images/_file/34623685844.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_off00033400.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33400 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_01_sfnt_off00034a9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34A9F 18276 bytes
SHA-256: ac342242146889120fc7c502bc664983c5b6f9b06550300ee2e460beeee2cc79
font_02_sfnt_off00037a8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37A8A 10976 bytes
SHA-256: 852bc496b41b61704654760ef28de5759f9fc392dd5f93e79d155ebcc1b3fb0c

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