Malicious PDF — malware analysis report

Static analysis result for SHA-256 445c3b05ef8c2fcd…

MALICIOUS

PDF

140.9 KB Created: 2021-10-07 19:25:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-10
MD5: caa08e2cc78f12267897c053ff4475c6 SHA-1: 288707350616f2db4175ff3faf94443d98873745 SHA-256: 445c3b05ef8c2fcd0f64c3f5ce193f41c587af73a9db9385acbae5851bf33c64
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

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
  • 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://760_709737661.mildmedia-dev.eu/uploads/userfiles/files/68260298248.pdf In PDF document text
    • https://goodluckfishing.com/ckfinder/userfiles/files/xifixoxepi.pdfIn PDF document text
    • http://brandweeramsterdamamstellanden.nl/userfiles/file/zarozodogaxoferawur.pdfIn PDF document text
    • https://bartonsteel.com/tony/barton/ckfinder/userfiles/files/betewanebewiwujotagowedo.pdfIn PDF document text
    • http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613bee161aa9d---39240632213.pdfIn PDF document text
    • http://olddieselparts.com/ckfinder/userfiles/files/buveginikuvi.pdfIn PDF document text
    • https://www.dekleinewerf.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161598a57cd963---30570922238.pdfIn PDF document text
    • https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c7b681dc3b---duranavanukitajolanot.pdfIn PDF document text
    • http://tostonet.cl/ckfinder/userfiles/files/zamagelufaretuxaselevab.pdfIn PDF document text
    • https://toscanafantastica.com/userfiles/file/47767951291.pdfIn PDF document text
    • http://terezmisszio.eu/files/file/kopibe.pdfIn PDF document text
    • http://chnli.tw/CKEdit/upload/files/96422307126.pdfIn PDF document text
    • http://poornasreehomeoclinic.com/ckfinder/userfiles/files/vozorepik.pdfIn PDF document text
    • http://sieuthibds.net/images/files/dagazuxirinezakod.pdfIn PDF document text
    • http://www.scsk12.org/policy/files/files/14201854163.pdfIn PDF document text
    • https://tsegypt.com/file/nifoziruwepogejenub.pdfIn PDF document text
    • http://0932018255.kad.tw/kads/ckfinder/userfiles/files/73393315527.pdfIn PDF document text
    • http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/161408cc16184e---21797665837.pdfIn PDF document text
    • https://rsebolivia.org/userfiles/file/wiwevudukajefop.pdfIn PDF document text
    • http://hani-bee.com/userfiles/files/sepepem.pdfIn PDF document text
    • https://sanagustin.cl/files/12960903567.pdfIn PDF document text
    • https://mbp.hastatis.com/mbp/upload/images/images/upload/ckfinder/34075032555.pdfIn PDF document text
    • https://aalatour.com/basefile/b2caalatourcom/files/dofowuwutimomobulamoro.pdfIn PDF document text
    • http://skuplaptop.pl/wp-content/plugins/formcraft/file-upload/server/content/files/161337186a3c5a---bijenupa.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=factors+of+thirtyPDF 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_off0001c3ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C3EF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001dc01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DC01 19708 bytes
SHA-256: 952ae9f14efa2f120e9087b5667b3850a53fc1c452f4fab5f344de5ff15c3674
font_02_sfnt_off00020e9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20E9E 10240 bytes
SHA-256: 324671c2c8e4548e91a0c1c7e0a0413a98e1da0facc261aaa191ec9c795126ea