Malicious PDF — malware analysis report

Static analysis result for SHA-256 f04ab61472da8085…

MALICIOUS

PDF

97.6 KB Created: 2021-06-26 02:58:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 12bb0af43a93e04c03f8d2c9794f0bd0 SHA-1: 0183ef0e2a80ff67d029c3c1008cf8e9229cf889 SHA-256: f04ab61472da8085d63692654268fbdae718032c017b6ae66d78fa7a8e95998d
156 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to numerous URLs, many of which are hosted on compromised WordPress sites or disposable domains, indicating a phishing or malicious redirection attempt. The ClamAV detection and ML classifier strongly suggest malicious intent, likely to lure users to malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9957

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://greyquotient.com/wp-content/plugins/super-forms/uploads/php/files/ab33f71e22d2c87b45ac711bcb1e88b5/nuwoseba.pdf In PDF document text
    • https://www.keystonecare.co.uk/wp-content/plugins/super-forms/uploads/php/files/74573a947edde445d69ebcb6d2eaf016/74613368709.pdfIn PDF document text
    • https://atl-50.com/files/file/netuzupi.pdfIn PDF document text
    • https://djennebeads.com/nbloom/fckuploads/file/59092447363.pdfIn PDF document text
    • http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160b359a09b13d---91963817724.pdfIn PDF document text
    • https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b8e349a8a2---lejitatapatumasawima.pdfIn PDF document text
    • http://akcjonariusz.com/UserFiles/file/rizowafamur.pdfIn PDF document text
    • http://photo-preiss.com/upload_files/files/79366922961.pdfIn PDF document text
    • https://churchofgodinjamaica.org/app/webroot/files/19493305781.pdfIn PDF document text
    • http://willtorock.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5912f0da55---75785052314.pdfIn PDF document text
    • http://namdolove.com/FileData/ckfinder/files/20210609_DAB4BB2B83192F85.pdfIn PDF document text
    • http://xn--h49al33a2zdp0eo1x.com/DATA/file/20210518090148.pdfIn PDF document text
    • http://www.ausafrica.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160bf93924c2b9---32560269832.pdfIn PDF document text
    • http://basumati.com/app/webroot/ckfinder/userfiles/files/25101600719.pdfIn PDF document text
    • https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/16081aa2a255b6---37288565916.pdfIn PDF document text
    • http://a2itsolutions.com/chop/multimedia/userfiles/file/43584269358.pdfIn PDF document text
    • http://sakirnoopo.ru/wp-content/plugins/super-forms/uploads/php/files/f2314d57717e9d9a298e722658aac703/97970518508.pdfIn PDF document text
    • https://arrayamed.com/userfiles/file/mosavosisojetopodoruz.pdfIn PDF document text
    • https://cihangirhotel.com/upload/ckfinder/files/64009032260.pdfIn PDF document text
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/b4e3f0155f719880c7509b77dd009df2/tepebowedatapedal.pdfIn PDF document text
    • http://www.argentum.com/wp-content/plugins/super-forms/uploads/php/files/mgtubj6l3mah7d88mmm3opkje1/36482277411.pdfIn PDF document text
    • http://marinapogon.pl/upload/file/xevubukuvowepozolis.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=can+i+rent+out+a+room+in+my+housePDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011ac7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AC7 10572 bytes
SHA-256: 2efcb4b32b1d8193f5dfb8aba88c3b7230ebc0b53e9ed4b9657de25c37342c82
font_01_sfnt_off000132c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132C3 17688 bytes
SHA-256: 82bd087dd08d90addb2df3f7512debf90badf6e5e9e690cf3483746847d7849e
font_02_sfnt_off0001613a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1613A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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