Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc74fa3eceff606f…

MALICIOUS

PDF

84.4 KB Created: 2021-10-04 13:02:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 37e8e288db8a5d3866969ed005445340 SHA-1: 7aa6e3186115601f162ede7877550dbdf3b6219e SHA-256: fc74fa3eceff606f3cb5e9caf3aa270faaba2418491c07f0f2e557b9b5ebde00
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains a link farm with numerous URLs pointing to compromised CMS upload directories and disposable hosting, suggesting a phishing or malware distribution attempt. The presence of multiple external URIs and link farm heuristics indicates a deliberate effort to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

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://sualpturizm.com/userfiles/file/valoxoxafodapide.pdf In PDF document text
    • https://rybczewice.pl/userfiles/file/10091289698.pdfIn PDF document text
    • http://jonme.net/ckupload/files/43915767125.pdfIn PDF document text
    • https://iword.de/userfiles/file/17659730571.pdfIn PDF document text
    • http://kuwaited.com/cote_dor_import/admin/ckfinder/userfiles/files/57038025503.pdfIn PDF document text
    • http://smwiarus.pl/ckfinder/userfiles/files/10508933519.pdfIn PDF document text
    • https://anitt.in/ckfinder/userfiles/files/medikiwezub.pdfIn PDF document text
    • https://propbrains.com/wp-content/plugins/super-forms/uploads/php/files/32886fd68804bdbe7fba04de8b877578/7526212236.pdfIn PDF document text
    • http://billedbutikken.dk/articlefiles/file/giwaf.pdfIn PDF document text
    • https://luxartparquet.com/wp-content/plugins/super-forms/uploads/php/files/6a655ecbe77b5aeac6d28ccde416dde0/pikuxezozobade.pdfIn PDF document text
    • http://thegioichuyendong.info/app/webroot/upload/files/wulobebagurefol.pdfIn PDF document text
    • https://asesoriagade.com/app/webroot/files/files/babolajiruvosaziti.pdfIn PDF document text
    • https://arbormaster.net/uploads/files/23813816173.pdfIn PDF document text
    • http://xn--j1aii.su/userfiles/file/kesudavirivinanumifo.pdfIn PDF document text
    • http://studioturina.com/userfiles/files/11904716208.pdfIn PDF document text
    • http://print-printonline.com/ckfinder/userfiles/files/75310323412.pdfIn PDF document text
    • https://condicionamentofisico.com/arquivos/file/33027895446.pdfIn PDF document text
    • http://emachn.com/data/attachment/file/87070913037.pdfIn PDF document text
    • http://devitohomesorlando.com/userfiles/files/lidejupazidarub.pdfIn PDF document text
    • https://milosislandrooms.gr/userfiles/file/98452556025.pdfIn PDF document text
    • https://kccegis.com/upfiles/content/file/20210914122047.pdfIn PDF document text
    • https://coloreverything.love/wp-content/plugins/super-forms/uploads/php/files/dc0b240f39d406275fa90fc2a2df2d6d/xanuvigebinusegufimorime.pdfIn PDF document text
    • https://fermuar.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d8a55bb508---23430778992.pdfIn PDF document text
    • http://locthanhroyal.com/upload/files/fulekometilubilexebex.pdfIn PDF document text
    • http://lilit-realty.com/wp-content/plugins/super-forms/uploads/php/files/eko3b3o2pugrfna5tesge5ga31/88375306548.pdfIn PDF document text
    • http://www.sushmitamukherjee.com/fckimages/file/83941941040.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=host+a+31+partyPDF 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_off0000e2d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2D0 19200 bytes
SHA-256: 2b1b3a1310a66a74f6d4a76f81a6f392082afd215ded5c3d9b4a19b7e86f4e21
font_01_sfnt_off0001146b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1146B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012c82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C82 10200 bytes
SHA-256: 7fd0a8637ba7b5646f44292c9b5adc9b219a08db0fdf09d737955e6da389deee

Open this report in the interactive analyzer, or submit your own file for analysis.