Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9691106e1ee490c…

MALICIOUS

PDF

500.2 KB Created: 2022-01-06 07:17:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-03
MD5: d50bf438ad671ed0d802a8d9e654b571 SHA-1: b97118cb4dc649ce9f338e405b2be044b3060b7c SHA-256: f9691106e1ee490c71b5a56b17f2b61f18750b1050085010d9a3583f11b1e3ad
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5627

Heuristics 7

  • 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 link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://krisoc.ru/uplcv?utm_term=b.+l.+theraja+book+pdf PDF link annotation
    • https://www.milestonesmn.org/ckfinder/userfiles/files/fasalidexevasuwip.pdfIn PDF document text
    • http://udokutscher.de/gfx/userfiles/files/rigodijeleva.pdfIn PDF document text
    • https://gazdalkodjokosan.hu/img/userfiles/file/wilulegasepikumapelevori.pdfIn PDF document text
    • https://igk-lilienthal.de/downloads/nonevutukevefogepar.pdfIn PDF document text
    • http://boras-sjuharad.boj.se/uploads/userfiles/files/63883672085.pdfIn PDF document text
    • https://hankilfood.com/userfiles/file/20211211094246.pdfIn PDF document text
    • https://automatisme-portail-bordazzi.fr/userfiles/fichiers/towodorabofatetekopuzi.pdfIn PDF document text
    • http://katyababash.com/images/uploads/file/dunapabisazapire.pdfIn PDF document text
    • http://www.plan.msu.ac.th/ckfinder/userfiles/files/72894155615.pdfIn PDF document text
    • https://mvpartners.be/images/uploadedimages/file/71479751530.pdfIn PDF document text
    • https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/161449877c1140---83580000637.pdfIn PDF document text
    • http://devison-matras.com/upload/file/jaganalizisoxotutus.pdfIn PDF document text
    • http://fotocaroli.it/userfiles/files/gemifubutufetibotisajeder.pdfIn PDF document text
    • http://vodova51-53.cz/files/41491591162.pdfIn PDF document text
    • https://www.cheeweitay.com/admin/kcfinder/upload/files/betaviluxixufojo.pdfIn PDF document text
    • http://onishi-kyosendo.jp/archive/92948374673.pdfIn PDF document text
    • http://lsbwg.com/ckfinder/userfiles/files/20211111/1752342743.pdfIn PDF document text
    • http://fukushigetakahiro.jp/pic/files/pijizubanofidiweleridol.pdfIn PDF document text
    • https://mashura.co/userfiles/files/8883522666.pdfIn PDF document text
    • http://ekonomiyonetimivepazararastirmalarikongresi.reklam.cc/FCKeditor/editor/filemanager/connectors/userfiles/file/zarukujipajixo.pdfIn PDF document text
    • http://dar-tom.pl/userfiles/file/62475837496.pdfIn PDF document text
    • https://12tiga.com/contents/files/34077129283.pdfIn PDF document text
    • http://tsg-edinstvo.ru/userfiles/file/77386550036.pdfIn PDF document text
    • http://szm.hu/userfiles/file/vokowupuwigajosulij.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_off000765e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x765E5 10712 bytes
SHA-256: 5de786454402a5fb6f225af3585cf2a8e730badd9430d0fe93bde2b7d973a6f0
font_01_sfnt_off00077e78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77E78 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off00079517.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79517 17436 bytes
SHA-256: 7030943d9061c7fb0d6cba81b1086e880633c2c0ebe660b1e1f204d4a42e4bb3