Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa863b3d149da7f4…

MALICIOUS

PDF

98.3 KB Created: 2021-07-31 15:02:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: 5abfd3f4e87213eeb7d519cde1fda0b4 SHA-1: 6bdd631563a9d3e98b91cecffeeb3c6bc5c0051c SHA-256: aa863b3d149da7f467b66420987f067f4307fec3154b9657ba162d715455392d
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://harchovyk.com/userfiles/file/xamakuluwalorer.pdf In PDF document text
    • http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609067384781a---dupivib.pdfIn PDF document text
    • https://chamsocmuihong.com/wp-content/plugins/super-forms/uploads/php/files/f31cls6akl8iffa8qoiaf6mf5s/zivobunabedevepe.pdfIn PDF document text
    • https://alutat.com/data/file/67278175579.pdfIn PDF document text
    • http://alituncer.com/userfiles/file/24621623607.pdfIn PDF document text
    • http://videofilm-tv.ru/content/File/malamutuvad.pdfIn PDF document text
    • http://taeguektour.com/FileData/ckfinder/files/20210531_29846A602A912242.pdfIn PDF document text
    • https://bestcoloringpages.com/userfiles/file/kirej.pdfIn PDF document text
    • https://www.democratum.com/wp-content/plugins/super-forms/uploads/php/files/9692fae55a8dc9e54c85ae5aef272400/dogepame.pdfIn PDF document text
    • https://expeditions-travel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607309c2275a0---55408434913.pdfIn PDF document text
    • https://bohemiamaestro.com/webpagebuilder/ckfinder/userfiles/files/berolunum.pdfIn PDF document text
    • http://aptatravel.com/clients/4/48/489dad2d2d8436d4c085fc0ccdc2d1b3/File/61394030380.pdfIn PDF document text
    • http://accessprecision.com/userfiles/file/zuluwizeredunuvadaw.pdfIn PDF document text
    • http://statsale.com/data/upload/ck/files/25671696960.pdfIn PDF document text
    • http://stattus.com/assets/file/tazufi.pdfIn PDF document text
    • http://daotaonhaccong.com/uploads/userfiles/file/97667897583.pdfIn PDF document text
    • http://metabolit-plus.ru/files/file/53362738165.pdfIn PDF document text
    • http://laptopplus.be/app/webroot/files/userfiles/files/tonirodowokatusigub.pdfIn PDF document text
    • http://mirrorgallery.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099043811dd7---36508635357.pdfIn PDF document text
    • http://njuhome.pl/ckfinder/userfiles/files/pokuduvujaza.pdfIn PDF document text
    • https://bodwellassociates.com/wp-content/plugins/super-forms/uploads/php/files/032b79a5fa7ebce7ee91569abd0428c0/rixopo.pdfIn PDF document text
    • http://kapalishakti.com/ckfinder/userfiles/files/90683916305.pdfIn PDF document text
    • https://bem-sa.com/img/file/dedapaderat.pdfIn PDF document text
    • https://finestblogger.de/wp-content/plugins/super-forms/uploads/php/files/m2tsrg4ftp6p5ere78cl1r4jfs/lasedejifikizemekanobem.pdfIn PDF document text
    • http://torgoborud.org/images/file/13871135860.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6ae82df4d0---wuwofopefidamilejog.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=arihant+chapter+wise+solutions+maths+class+12+pdf+downloadPDF 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_off00011afd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AFD 17136 bytes
SHA-256: b1cc7394101e69e0454d9dcfa3235a721f77a65000357644e474a2ccfbc60e4e
font_01_sfnt_off000147f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x147F4 11224 bytes
SHA-256: 0bd4d895ce314a4e47b424be94356db2dc35f98f4f1dfc36309e7b07cecb726f
font_02_sfnt_off00016240.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16240 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1