Malicious PDF — malware analysis report

Static analysis result for SHA-256 478877ad6a3ce4b2…

MALICIOUS

PDF

73.8 KB Created: 2021-10-15 08:04:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-20
MD5: 8a0d76f89feeb6139bdbbb9d30bbe15a SHA-1: cf4c20448c3a9993264c2b99b2a528e205a08fd7 SHA-256: 478877ad6a3ce4b2275cc5529289d094b0f3b82f613996df303fc9604c75d859
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. 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://avphunter.ro/ckfinder/userfiles/files/vabovovebujixu.pdf In PDF document text
    • https://www.verimevzabavu.cz/ckfinder/userfiles/files/17748924235.pdfIn PDF document text
    • https://cjsc.se/ckfinder/userfiles/files/42749509272.pdfIn PDF document text
    • http://cw-cut.com/uploads/file/27957686249.pdfIn PDF document text
    • http://huichem.com/ckfinder/userfiles/files/61032943168.pdfIn PDF document text
    • http://evabody.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1614c73441c7e3---madumozegadepegoje.pdfIn PDF document text
    • http://xboxheerlen.nl/userfiles/file/64597522853.pdfIn PDF document text
    • http://habitat3.eu/userfiles/files/48153831978.pdfIn PDF document text
    • http://12shio5.com/contents/files/suvodad.pdfIn PDF document text
    • https://yomadesign.com/userfiles/Proj_Name/files/posozudapagen.pdfIn PDF document text
    • https://hoffmanowska.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16158863af33d3---36196459465.pdfIn PDF document text
    • http://kayamedbursa.com/userfiles/file/zubiralavefomiluxi.pdfIn PDF document text
    • https://infiniteprospects.com/FCKeditor/file/15446703214.pdfIn PDF document text
    • http://www.deco-interieure.com/userfiles/file/sewudusipuriwun.pdfIn PDF document text
    • http://hk-bbc.com/upload/file/37839255524.pdfIn PDF document text
    • http://karthikeyanjayaram.in/userfiles/file/woxiz.pdfIn PDF document text
    • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613af89f25315---24746310121.pdfIn PDF document text
    • https://pianoinprimopianofestival.com/uploads/file/sopivetudizezutef.pdfIn PDF document text
    • https://moma-restaurant.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615766d562e39---xifexaguxukitalivowosozu.pdfIn PDF document text
    • http://www.hgekc.com/media/userfiles/file/kagobofasufesatupugefe.pdfIn PDF document text
    • https://zd-zeta.com/uploads/files/202110110452533383.pdfIn PDF document text
    • https://loan-financial.com/wp-content/plugins/super-forms/uploads/php/files/e953260a5ed4837545ef543f23052af0/buzazogatevemune.pdfIn PDF document text
    • https://enerjimakine.com/tsrm1/img/userfiles/file/63468673226.pdfIn PDF document text
    • https://acheapantheia.foliopic.com/6526062980.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/HKUGBsJGI0E/uplcv?utm_term=fire+fighting+notesPDF link annotation
    • http://kioskcondoweb.wpengine.com/wp-content/plugins/formcraft/file-upload/server/content/files/16165355ddae11---84006661037.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_off0000c12b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC12B 15952 bytes
SHA-256: 33384d099942aa712ba571a5791cdbc91f208f39d82678e6f88b2ff3dc76a6ab
font_01_sfnt_off0000ea2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA2D 10260 bytes
SHA-256: cd611334595f447fb871abcd943d312aeeda49e8555f22f4515ea6c5b02b4009
font_02_sfnt_off0001012a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1012A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1