Malicious PDF — malware analysis report

Static analysis result for SHA-256 941515315c689d4f…

MALICIOUS

PDF

373.2 KB Created: 2022-01-05 05:01:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12
MD5: 01afaa589f6c4bb5646bda9dbc8e7631 SHA-1: 066a331ef87579bbeb0ee9b5549e5dde8114c7c0 SHA-256: 941515315c689d4fa349d351f82927cf303f595fe79a3706affa58c03224b766
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and multiple links, including one pointing to a compromised WordPress upload directory, suggesting it's designed to trick users into downloading further malicious content. The heuristic 'PDF_SEO_UTM_REDIRECTOR_LINK' indicates the primary lure is a fake download disguised as sheet music, likely leading to phishing or malware. The ML classifier and ClamAV detection strongly support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8109

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
  • 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.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. 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://bagstyle.uz/images/file/89170346048.pdf In PDF document text
    • https://faurerom.com/userfiles/file/70327430565.pdfIn PDF document text
    • http://elfobchod.cz/foto/Image/file/pigobemonulujinitijovop.pdfIn PDF document text
    • http://www.recetasyconsejos.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615378c39e244---18434643754.pdfIn PDF document text
    • https://croatia-flyfishing.com/files/62984820622.pdfIn PDF document text
    • http://aytekinpolatel.com/image/files/fimezamikuwupefugavu.pdfIn PDF document text
    • http://dobrejaja.com/Upload/file/kelubiwixitezabolu.pdfIn PDF document text
    • http://www.cadex.biz/app/webroot/kcfinder/upload/files/68039472898.pdfIn PDF document text
    • http://fukaofoods.tw/uploads/files/202112011023303276.pdfIn PDF document text
    • https://sardavetri.it/userfiles/file/mofomokawulodomugovibusun.pdfIn PDF document text
    • https://www.singaporemedicalclinic.com/ckfinder/userfiles/files/36734492587.pdfIn PDF document text
    • http://jongauger.com/ckfinder/userfiles/files/lizazerubukuxaja.pdfIn PDF document text
    • http://1sourcematerialhandling.com/userfiles/file/66516302440.pdfIn PDF document text
    • http://jamalcar.com/userfiles/file/35645228672.pdfIn PDF document text
    • https://digitaluzaktanegitim.com/calisma2/files/uploads/72756238742.pdfIn PDF document text
    • https://www.escolamacrobiotica.pt/backoffice/assets/js/kcfinder/upload/files/golidot.pdfIn PDF document text
    • https://tradingphrases.net/userfiles/files/72588595684.pdfIn PDF document text
    • http://elmiraclassiccountry.com/wp-content/plugins/super-forms/uploads/php/files/db6f9ea0b6c0ee2a7a6e08a432f9ab03/jawumisuromeja.pdfIn PDF document text
    • https://westcoastmovers.ca/wp-content/plugins/super-forms/uploads/php/files/m3dfuk32pg3nlrmpdd6jshpguk/tibimezal.pdfIn PDF document text
    • http://articolo17.it/siti/usr/foto/files/jegixotuvorojimakave.pdfIn PDF document text
    • https://puertoestereo.com/wp-content/plugins/super-forms/uploads/php/files/scukteo1ebhu2a0g7ovtsj82vs/63676815094.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/UsNeCLCzgYg/uplcv?utm_term=axel+f+flute+sheet+musicPDF link annotation
    • https://tes-sys.com/uploads/ckfinder/files/20210907/16309558222334.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_off000561e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x561E1 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_01_sfnt_off00057880.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57880 20380 bytes
SHA-256: 9fe88471e6b66131e264831f9ee8b5e35272dbf2e1cfa370d72b483e2c376de9
font_02_sfnt_off0005aebf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AEBF 10300 bytes
SHA-256: ff1ee30a4e8d54f1b5a690698a47587ebc526512e0778e48a3fd678849f73894