Malicious PDF — malware analysis report

Static analysis result for SHA-256 44571e22b295b924…

MALICIOUS

PDF

92.6 KB Created: 2021-10-20 13:54:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12
MD5: 19e04846779dae9046314e819065e695 SHA-1: 0e13a7fb70adb97093c1bd51f067bd234f6854f2 SHA-256: 44571e22b295b92426f45d025dc4660710ac037d48c1a0aa873cfcbbbd8bbadc
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, many of which point to compromised CMS uploads or disposable hosting, indicating a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://pistant.ru/uplcv?utm_term=bless+the+lord+scripture PDF link annotation
    • http://cortocircuito.trialpanel.com/images/Upload/files/26549239674.pdfIn PDF document text
    • https://actsonics.com/uploads/files/202109140605301267.pdfIn PDF document text
    • https://ms02bet.com/contents/files/4565665020.pdfIn PDF document text
    • http://teusz.pl/UserFiles/file/56182853365.pdfIn PDF document text
    • http://adamslakeband.org/userfiles/file/12893778532.pdfIn PDF document text
    • https://handinhand-daycare.com/ckfinder/userfiles/files/vobofu.pdfIn PDF document text
    • http://xn--evdebakmhizmetleri-k0c.com/uploads/file/26767744269.pdfIn PDF document text
    • http://fteq.ru/files/file/72864171441.pdfIn PDF document text
    • https://fentesmakina.com/paket/upload/files/noxasanifizexiw.pdfIn PDF document text
    • http://ssss-sangam.com/userfiles/file/28607981516.pdfIn PDF document text
    • https://tucsonhomewindowtint.com/wp-content/plugins/super-forms/uploads/php/files/4803f37c580a9e26ff65fc4a88eba601/nogeropagowow.pdfIn PDF document text
    • http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/161632322e5b19---31211274181.pdfIn PDF document text
    • https://ijtm.in/userfiles/file/83434296251.pdfIn PDF document text
    • http://docando.es/js/ckfinder/userfiles/files/22389971313.pdfIn PDF document text
    • http://phutungquanghieu.com/app/webroot/files/ckfinder/files/42035644876.pdfIn PDF document text
    • http://www.anieliasfx.com/uploads/textareas/file/wogefemokivanit.pdfIn PDF document text
    • http://asorokolaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/69565644273.pdfIn PDF document text
    • http://kme-kme.cz/files/file/tumodanigopu.pdfIn PDF document text
    • https://toscanafantastica.com/userfiles/file/69703497407.pdfIn PDF document text
    • https://www.burit.net/wp-content/plugins/formcraft/file-upload/server/content/files/1614eb03952630---53855883271.pdfIn PDF document text
    • http://altus.pl/userfiles/file/gupegavovamizavufa.pdfIn PDF document text
    • https://mgc.to/sites/web/upload/files/rowulogoxidasotogawawof.pdfIn PDF document text
    • https://podgoricki-klub.me/userfiles/file/najufutipubirajitixidiri.pdfIn PDF document text
    • http://massarentearchitettura.com/userfiles/files/51463084211.pdfIn PDF document text
    • https://stl-log.com/htdocs/cljr/data/files/dekolopuposafagavewi.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 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_off00010286.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10286 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011a9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A9D 10496 bytes
SHA-256: 4be5646b953a449093f2c8430b63f6d961146bbac921071e0895730b24891969
font_02_sfnt_off000132a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132A3 19144 bytes
SHA-256: 60c0fc8e7a61b7ebfb735cf4b0f57ab5351a54b7448753f7e92930ff77b7b3ba

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