Malicious PDF — malware analysis report

Static analysis result for SHA-256 0561bd9cf8d3bf04…

MALICIOUS

PDF

230.5 KB Created: 2021-07-02 07:07:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 525aae73ed49f11132e0b3fd37d67741 SHA-1: 7ae4429e9b2419e943c27240bf9b1896560d725a SHA-256: 0561bd9cf8d3bf048dd2c9c17d0c346589cee4ad08960a1454290dea9c0020a7
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple links pointing to compromised websites, identified as an SEO redirector for free-download phishing. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically a phishing trojan. While no scripts were directly extracted, the presence of numerous external links suggests the document's primary purpose is to redirect users to malicious sites for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9943

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
  • 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.
  • 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://huntic.ru/uplcv?utm_term=behavioral+research+psychology PDF link annotation
    • http://baaningdoi.com/file_media/file_image/file/wadoxejoxofun.pdfIn PDF document text
    • https://minutesnap.com/wp-content/plugins/super-forms/uploads/php/files/51fbca44052d224a597182fa293f7b25/15942305704.pdfIn PDF document text
    • https://kisikana.hr/userfiles/file/kawodirutogaxexo.pdfIn PDF document text
    • http://ats-dz.com/userfiles/file/92945450598.pdfIn PDF document text
    • https://laser-arena.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1606f1d35316b6---letigosegolip.pdfIn PDF document text
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/160dc89b6d43d9---rufejupefanogawagadev.pdfIn PDF document text
    • https://rjiminfra.com/wp-content/plugins/super-forms/uploads/php/files/e870657afe4b259424e9ae0c9ea4aa3a/mipidujot.pdfIn PDF document text
    • http://atek-ent.com/upload/file/baxebidusufumozofoxisagu.pdfIn PDF document text
    • http://jyjwqj.com/uploadfile/file///2021062712594910.pdfIn PDF document text
    • https://rodolphe-blanchet.fr/Rodolphe/fckeditor/file/80402468501.pdfIn PDF document text
    • https://encouragingmath.com/wp-content/plugins/super-forms/uploads/php/files/2dbd3465d874937308d58b4459c3f064/50023677996.pdfIn PDF document text
    • http://vegasoft.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160d61d5ad6ec0---gomasal.pdfIn PDF document text
    • http://vitanova-cattery.com/upload/file/xesok.pdfIn PDF document text
    • https://autosaloncenter.com/uploads/file/xedabapawakojepijem.pdfIn PDF document text
    • https://terravistahometeam.com/wp-content/plugins/super-forms/uploads/php/files/99852e0f1bbab5944ec6d30bbfea7ce6/28571163289.pdfIn PDF document text
    • https://www.euroservicemilano.it/wp-content/plugins/formcraft/file-upload/server/content/files/16071fd345e0ce---53027269466.pdfIn PDF document text
    • http://cnokorea.com/userfiles/file/26168322287.pdfIn PDF document text
    • https://hotelritariccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a01f02b0be0---47862409802.pdfIn PDF document text
    • https://www.adelaarenergy.com/wp-content/plugins/super-forms/uploads/php/files/jnob1tbf2illpibang4bf8k5k7/15317264259.pdfIn PDF document text
    • http://www.anjhimayath.com/upload/file/82530088133.pdfIn PDF document text
    • https://www.sanier.pl/wp-content/plugins/super-forms/uploads/php/files/tdr50a54ti7tvvj12uvksnn1hh/80108317621.pdfIn PDF document text
    • http://ccforum.kr/uploads/file/1622418283.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_off00032396.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32396 10684 bytes
SHA-256: c5746b352df1ad4194addcf16005365113ed96d95d655dc3efe3d0d47cdc09e0
font_01_sfnt_off00033c4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33C4B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0003545d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3545D 22036 bytes
SHA-256: 135f7f2983bfa8535afeaa0fc058df3d3e080cf7bea962a44484589c62de15ee