Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dd1305c46b728e5…

MALICIOUS

PDF

135.5 KB Created: 2021-08-10 02:08:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-26
MD5: 4f771e067f042c6849f65032bb1bfb57 SHA-1: f684d16840dfe351761f300c7919948ebee1b143 SHA-256: 3dd1305c46b728e5e584dff3cac8f65cd529e5e6097e0f2f284547132b20caef
164 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8084

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 http://informerfitness.com/wp-content/plugins/super-forms/uploads/php/files/a3f2902857675b4a4d0e853379930a8e/6711402862.pdf In PDF document text
    • http://dichvutheapec.com/upload/FCK/file/pitivuvas.pdfIn PDF document text
    • https://globalazeri.az/wp-content/plugins/super-forms/uploads/php/files/f166gm8dgqfeu7ninf0q83qqv1/jaguruj.pdfIn PDF document text
    • https://premiersuli.hu/files/files/zedunedoniwer.pdfIn PDF document text
    • http://kuehllawpc.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/giwenele.pdfIn PDF document text
    • http://ural-resyrs.ru/data/file/29556087912.pdfIn PDF document text
    • http://webinaris.training/ckfinder/userfiles/publics/files/42489276892.pdfIn PDF document text
    • https://devcons.org/uploads/userfiles/files/zirotigef.pdfIn PDF document text
    • http://mywayrtk.info/userfiles/file/dijivaxegada.pdfIn PDF document text
    • https://www.blackandwhite-salon.com/wp-content/plugins/super-forms/uploads/php/files/92d568b6cc86f876ee7a84e5b9775203/juguxoxemifuwodivapamul.pdfIn PDF document text
    • https://avis-medical.ma/wp-content/plugins/super-forms/uploads/php/files/7c08167fa9263b059d85e5cb979d8668/pogeritilegonadolisaveku.pdfIn PDF document text
    • http://www.highlandmetals.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1606f3ec6d05fd---sisalawajetowizezezezube.pdfIn PDF document text
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/hqep27jl9vg4gv8jo7k0e5iffg/43013242830.pdfIn PDF document text
    • https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/160756d71d9e4e---bazupaxibazimofufigafi.pdfIn PDF document text
    • https://www.officinadelgustoroma.com/wp-content/plugins/super-forms/uploads/php/files/d19614261ffa4c3e3175cce2933cbfe8/10398007486.pdfIn PDF document text
    • https://uaqbakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ade7e90e11e---nunojitat.pdfIn PDF document text
    • http://canigrup.com/userfiles/file/87719367236.pdfIn PDF document text
    • https://cruiseship.cruises/wp-content/plugins/super-forms/uploads/php/files/a2gg6orrqm8mv9ohl7n7v6fode/rasomoberesidu.pdfIn PDF document text
    • http://massarentearchitettura.com/userfiles/files/53318262864.pdfIn PDF document text
    • https://cffcommunications.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/160a42946d9920---8180241546.pdfIn PDF document text
    • http://yakutiaprime.ru/SITE/files/editor/file/kuwobof.pdfIn PDF document text
    • http://rolmech-strzelno.pl/Upload/file/jafadekepokigelubela.pdfIn PDF document text
    • http://ganan10.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1608d27e3c4146---sitebikigubejekeso.pdfIn PDF document text
    • http://xn--22cjbbm2eyae3ehabdb4kqdtae3dxnnc1fhf.com/user_img/files/pisekafurotuzofelalawene.pdfIn PDF document text
    • http://anhuishangbiao.com/upload_fck/file/2021-4-29/20210429000955853675.pdfIn PDF document text
    • http://taketty.xyz/js/ckfinder/userfiles/files/51963562141.pdfIn PDF document text
    • https://vegastel.eu/components/com_mijoshop/opencart/image/data/files/45596691761.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=libro+de+espa%C3%B1ol+lecturas+primer+grado+de+primaria+1993+pdfPDF 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_off0001a772.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A772 11652 bytes
SHA-256: ddd12fa689e731de51d300a2629015d67c2befd9d85185d578faec421adba8b2
font_01_sfnt_off0001c2c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C2C5 19164 bytes
SHA-256: 663aaa95efe248729cb5c3bcc1af77e43136acca58e4b466e52b7a81c87feb6f
font_02_sfnt_off0001f31e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F31E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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