Malicious PDF — malware analysis report

Static analysis result for SHA-256 18aa987f9520cc71…

MALICIOUS

PDF

158.7 KB Created: 2022-01-22 03:19:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-09
MD5: 676e9c85b88836b1ee8fd63c76942eaf SHA-1: 52fea0e100c48db39d122b7a012da075606e0227 SHA-256: 18aa987f9520cc71d4c7063672a94e271dfe5a8ddc2efa3ad6d8405591b7808c
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6967

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://apagar.cinemadossertoes.com/ckfinder/files/madijunoxisoredojor.pdf In PDF document text
    • http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/16167599f266b5---84032769348.pdfIn PDF document text
    • http://zrdb-drogbud.pl/Upload/file/nabisubaruxozov.pdfIn PDF document text
    • http://www.yevres.fr/ckfinder/userfiles/files/vezufevimabixevegepenubu.pdfIn PDF document text
    • http://tndgdemo2.com/ckfinder/userfiles/files/92281827649.pdfIn PDF document text
    • http://myucmas.com/userfiles/file/37938848135.pdfIn PDF document text
    • https://www.bmo-agencement.fr/ckfinder/userfiles/files/31942478145.pdfIn PDF document text
    • https://krenzle.sk/editors/ckeditor/plugins/kcfinder/upload/files/riwuzukafabugejimirisod.pdfIn PDF document text
    • https://gelblighting.com/userfiles/files/21065222751.pdfIn PDF document text
    • http://livestocktool.com/d/files/demukirozizimaguvifugoz.pdfIn PDF document text
    • https://hotelristorantenovecento.it/wp-content/plugins/super-forms/uploads/php/files/7e262cf807964efca0ea94cd4a3c8187/vudaxeti.pdfIn PDF document text
    • http://mpsword.com/userData/ebizro_board/file/xukaxuwar.pdfIn PDF document text
    • http://nzozkrowodrza.pl/uploads/editor/file/57833751780.pdfIn PDF document text
    • https://conexusinternational.com/ckfinder/userfiles/file/23325708460.pdfIn PDF document text
    • http://cx-gl.hu/images/files/9194742681.pdfIn PDF document text
    • http://3e3i.com/UserFiles/file///69993683686.pdfIn PDF document text
    • https://myhoorayhealth.com/wp-content/plugins/super-forms/uploads/php/files/af3fbbf9b6dbf0dbe0395b184aee4d6c/23000599652.pdfIn PDF document text
    • http://fabiocaronearchitetto.com/userfiles/files/72636927546.pdfIn PDF document text
    • http://saint-party.com/media/file/87916695785.pdfIn PDF document text
    • http://micdelhi.in/userfiles/file/53245155121.pdfIn PDF document text
    • http://pressvaluation.net/FCKeditor/editor/filemanager/connectors/userfiles/file/zowijo.pdfIn PDF document text
    • http://catherine-massage.com/ckfinder/userfiles/files/wivasirukatep.pdfIn PDF document text
    • http://jsushibrea.com/uploads/files/volex.pdfIn PDF document text
    • https://www.agnii.gov.in/kcfinder/upload/files/6088646877.pdfIn PDF document text
    • https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/16147755c2ea94---gafubolotebomadupajerat.pdfIn PDF document text
    • http://ride.hu/images/uploads/files/79497383723.pdfIn PDF document text
    • https://vanchuyenduongsat.vn/upload/files/fadur.pdfIn PDF document text
    • https://share.linkilike.com/libraries/kcfinder/upload/files/dojoxijipawevus.pdfIn PDF document text
    • http://picart-personal.pl/fckupload/upload/file/58647138984.pdfIn PDF document text
    • http://gkb-vityaz.ru/upload/files/75003151552.pdfIn PDF document text
    • http://amandamaitland.com/images/file/37266850687.pdfIn PDF document text
    • http://beiks.info/public/file/83069211935.pdfIn PDF document text
    • http://www.aillant-sur-tholon.com/ckfinder/userfiles/files/vubirej.pdfIn PDF document text
    • https://merten-rozetki.su/kcfinder/upload/files/90989543203.pdfIn PDF document text
    • http://ruihuitax.com/files/file/11581386777.pdfIn PDF document text
    • http://dossalas.com/wp-content/plugins/super-forms/uploads/php/files/c818ba7144818de978da5da89782099e/bapogepu.pdfIn PDF document text
    • http://suphammamnon.org/uploads/files/zivaje.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/RhDyTiV0TgQ/uplcv?utm_term=impinj+monza+r6-+p+datasheetPDF 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 extracted file (font_00_sfnt_off0001e687.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0001e687.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001e687.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E687 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_01_sfnt_off0001fd26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FD26 17520 bytes
SHA-256: 16fb645b31ed8e21c594c39a0246758454e81110a21e71dddf80a322084d083d
font_02_sfnt_off00022ab4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22AB4 10952 bytes
SHA-256: 0e6716916122086afc470c4eae712f6dca8db5912a1cd4de393d0facf7e4d2a2
font_03_sfnt_off000243ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x243ED 11560 bytes
SHA-256: a7b24c3f22a13565ae8aa21dad987c144704445cb7912160e4ed167ed092d9dd