Malicious PDF — malware analysis report

Static analysis result for SHA-256 624acb01c39a9b5b…

MALICIOUS

PDF

101.0 KB Created: 2021-08-12 14:16:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-29
MD5: 963ef2b5a7edf417af529cec46cfc66b SHA-1: aa29953dc1bd98e3f421485f351cd7a7b277fa9f SHA-256: 624acb01c39a9b5bd92d9840346b88525bb5afe6024259fd128983f9b516cda8
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9878

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 http://wasserburg.pl/userfiles/file/72314735111.pdf In PDF document text
    • http://signexpowholesale.com/project-new/christianbook/upload_images/file/ropezevi.pdfIn PDF document text
    • https://greshamgilessalon.com/wp-content/plugins/super-forms/uploads/php/files/84b77a76cfd8befbc476692ba554b656/28444381979.pdfIn PDF document text
    • https://mimpiindahsatu.com/contents//files/sajivuvanodimagitomam.pdfIn PDF document text
    • https://boldvision.tv/wp-content/plugins/formcraft/file-upload/server/content/files/1607759d806afd---zinefosolexovulifa.pdfIn PDF document text
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/43d2a90d70c984e7e5792acd68943047/40210984344.pdfIn PDF document text
    • http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160bdff6e6452b---82632915588.pdfIn PDF document text
    • https://dodomacnosti.net/data/file/10916795546.pdfIn PDF document text
    • https://karinbentum.nl/uploads/file/27048361847.pdfIn PDF document text
    • http://robalton.es/Albums/images/file///zezofobazugubir.pdfIn PDF document text
    • http://mattstergamer.com/wp-content/plugins/super-forms/uploads/php/files/fcvv8r9olavobb0a6tdln6giq0/goreseluxexix.pdfIn PDF document text
    • http://chicohigh1987.com/clients/47015/File/6507568503.pdfIn PDF document text
    • https://floridaholidayplanner.com/wp-content/plugins/super-forms/uploads/php/files/93349d9156c68084d208a9e0f4c1f338/toguvof.pdfIn PDF document text
    • https://bienenaktuell.com/sites/bienenaktuell.com/files/file/lomaxuzurezeluwabuxumumuv.pdfIn PDF document text
    • https://georeno.ca/userfiles/files/25609469249.pdfIn PDF document text
    • https://cosplay-expo.it/ckfinder/userfiles/files/52358185172.pdfIn PDF document text
    • http://polletnv.be/uploads/files/39669899411.pdfIn PDF document text
    • https://quickonboarding.com/wp-content/plugins/super-forms/uploads/php/files/4f1db4d1ed54a4e8b8dadc7e0c2c77e7/sikiluwevasemotalu.pdfIn PDF document text
    • http://dafangtour.com/fckeditor/userimages/file/pefotigigipojo.pdfIn PDF document text
    • https://peoplesmodelinternational.com/ckfinder/userfiles/files/51249278668.pdfIn PDF document text
    • http://idcla.net/upload/files/wugojig.pdfIn PDF document text
    • http://cityhelps.org/clients/6/61/61afa7a028a8e04f14432b0fece6f2b0/File/xetezurifisekawamon.pdfIn PDF document text
    • https://rfcorporation.net/wp-content/plugins/super-forms/uploads/php/files/51ecf71478c7273a244cbcd15457f09c/61549997539.pdfIn PDF document text
    • http://zezoalza.com/ckupload/files/77120429104.pdfIn PDF document text
    • http://aivieksteslaivas.lv/userfiles/file/88554451334.pdfIn PDF document text
    • http://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160b7c5b495f2f---xasunafuzenagosav.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=the+incredible+adventures+of+van+helsing+extended+edition+trophy+guidePDF link annotation
    • 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_off00012108.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12108 19280 bytes
SHA-256: 53e84d81db95c09c923f745f59c1da669c73b99ab81e848fe2843362eba1c973
font_01_sfnt_off000151ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x151CA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000169e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x169E1 11384 bytes
SHA-256: fffccf6da8591bdede10b675a2235c34ce3dccd3c1c06915de33543c5392ce16