Malicious PDF — malware analysis report

Static analysis result for SHA-256 18ad44b4ff43b13b…

MALICIOUS

PDF

392.8 KB Created: 2022-02-04 12:53:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-09
MD5: 2add86efe85e6a7a67f5967972b4300b SHA-1: 32da7782129c21c31547e4997712aff5f2313289 SHA-256: 18ad44b4ff43b13b42cedda21c87f0dce876848bf155cb33f8c62e25e707a86d
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7188

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
  • 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://yoyep.co.za/XSRYdR1H?utm_term=flute+sheet+music+for+disney+songs+free PDF link annotation
    • http://blueleaves.ru/userfiles/file/1427165689.pdfIn PDF document text
    • http://www.saraviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16142b6b2817a7---lanobare.pdfIn PDF document text
    • https://dogathermalhotel.com/resimler/files/zunokudokinawar.pdfIn PDF document text
    • https://888nv.ru/userfiles/file/nasiwogokevovozakuvuda.pdfIn PDF document text
    • http://ettermanenterprises.com/ckfinder/userfiles/files/zudan.pdfIn PDF document text
    • http://ecohost.ru/pics/images/file/79450372579.pdfIn PDF document text
    • https://galedo.cz/www/data/cms_files/files/dagaf.pdfIn PDF document text
    • http://htk2.altrodesign.eu/ckfinder/userfiles/files/vitudelifepuwetino.pdfIn PDF document text
    • https://ckfinder.pamlskovnik.cz/ckfinder/userfiles/files/49961516168.pdfIn PDF document text
    • https://www.allduniv.ac.in/ckfinder/userfiles/files/vibevekanumamaditek.pdfIn PDF document text
    • http://brcassociati.com/userfiles/files/22993251493.pdfIn PDF document text
    • http://leeclinic.kr/userData/board/file/wolodinureregewibajavin.pdfIn PDF document text
    • http://osingenieria.com/images/admin/file/peravizapu.pdfIn PDF document text
    • http://musiconthebay.org/clients/2/26/269dd5bc96e197da989a8dccc71442af/File/bekamijewu.pdfIn PDF document text
    • https://walkandsmile.com/userfiles/file/gumezezogifepopiwer.pdfIn PDF document text
    • https://nirkongrp.com/ckfinder/userfiles/files/13690748355.pdfIn PDF document text
    • http://quickvideo.nl/userfiles/file/77107404407.pdfIn PDF document text
    • http://techbico.vn/uploads/image/files/74425889074.pdfIn PDF document text
    • https://estoniapools.com/contents/files/mawizep.pdfIn PDF document text
    • http://union.travel/ckfinder/userfiles/files/xalasipelimepibujojo.pdfIn PDF document text
    • https://viessmannboilers.ca/fck_upload/file/wasufuvudilakejokop.pdfIn PDF document text
    • http://hotelgiottotorino.com/userfiles/files/80018023591.pdfIn PDF document text
    • http://sporteambiente.it/ckfinder/userfiles/files/34108213671.pdfIn PDF document text
    • https://lifecareproduct.in/ckfinder/userfiles/files/xutufosutonuxivipoverike.pdfIn PDF document text
    • http://pappteam.hu/userfiles/file/zunixuxip.pdfIn PDF document text
    • http://drentmedischadvies.nl/uploads/files/30182850901.pdfIn PDF document text
    • https://trainova.com/userfiles/file/24074095330.pdfIn PDF document text
    • https://www.revistadefiesta.com/wp-content/plugins/formcraft/file-upload/server/content/files/1618dda669b8dd---54745568258.pdfIn PDF document text
    • https://gccpay.net/wp-content/plugins/super-forms/uploads/php/files/b10e3f9e306019f6088ce339caaef44a/48752571309.pdfIn PDF document text
    • http://kusadasidentalclinic.com/img/userfiles/files/jubudowelerarifu.pdfIn PDF document text
    • https://balatonfurediallatorvos.hu/userfiles/file/62692858227.pdfIn PDF document text
    • http://iamsoldierfit.com/wp-content/plugins/formcraft/file-upload/server/content/files/16158aeca79d3e---xojup.pdfIn PDF document text
    • http://we2meeting.com/ckfinder/userfiles/publics/files/rogolutagobefamuvatuxeg.pdfIn PDF document text
    • http://curry-box-deluxe.de/userfiles/file/83988934475.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 extracted file (font_00_sfnt_off0005b7bd.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0005b7bd.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005b7bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B7BD 10952 bytes
SHA-256: dc392a7ca147dd383f646392b5d59cdc4623c8d76b68723d72db0fa73e1f05e7
font_01_sfnt_off0005d0bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D0BF 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0005e7da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E7DA 16692 bytes
SHA-256: 4b4c77f936d683b01100e01698a02b6c8ca61b887e197c44520de4ec8b3bb5e4