Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd74f35db1a17075…

MALICIOUS

PDF

80.8 KB Created: 2021-09-05 19:36:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: 0defb1511324feb8faf936570e99de8d SHA-1: 1b326f6a67ea195f8908b3abdd37c3d533025b67 SHA-256: cd74f35db1a17075f121a63b0e5ff882ab62ecaa87f783db14fca9f7d333c116
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://ketchas.ru/uplcv?utm_term=anlage+kind+2018+pdf+steuererkl%C3%A4rung PDF link annotation
    • https://www.wflorlando.com/wp-content/plugins/super-forms/uploads/php/files/01ddfc8f942cf1e0fe1dc7ecf259ba5b/fetotetoteni.pdfIn PDF document text
    • https://esportenerd.com/app/webroot/ckfinder/userfiles/files/72116382432.pdfIn PDF document text
    • https://specialbrands.gr/wp-content/plugins/super-forms/uploads/php/files/27ed92548a7229012796d7a3b8aab759/mejiwosimamebotitowopow.pdfIn PDF document text
    • http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bb240a32e8b---23037537275.pdfIn PDF document text
    • https://eldorado777.ro/upload/editor/file/nutomelujomivuzutuve.pdfIn PDF document text
    • https://cuatudongsaigon.vn/uploads/files/tilodujepopedabunepu.pdfIn PDF document text
    • http://bergfin.se/wp-content/plugins/formcraft/file-upload/server/content/files/160b318977c801---jitudifirikilobadu.pdfIn PDF document text
    • http://birons.net/wp-content/plugins/super-forms/uploads/php/files/5cf756f0e0247b814bba1cd572e1e9b7/42830508068.pdfIn PDF document text
    • https://acgroupenterprise.com/userfiles/file/42711125000.pdfIn PDF document text
    • https://sandalyecenneti.com/wp-content/plugins/super-forms/uploads/php/files/1u9rgor1hmr68h23jictaf9o24/43689558195.pdfIn PDF document text
    • https://mygamedaysports.com/wp-content/plugins/super-forms/uploads/php/files/c71afc28995d02c0382303cc40caa6c8/3926549225.pdfIn PDF document text
    • http://www.ujepites.hu/userfiles/files/laxuwelo.pdfIn PDF document text
    • https://ipcare.nl/wp-content/plugins/super-forms/uploads/php/files/p8j6508sv91v0lvrknu5t9hvik/kopedawixivu.pdfIn PDF document text
    • http://dabaizhongxue.com/upload_fck/file/2021-5-26/20210526155720283019.pdfIn PDF document text
    • https://elitstroycraft.ru/source/file/39702010478.pdfIn PDF document text
    • https://coil.hk/upload/files/46600096114.pdfIn PDF document text
    • https://pensionatiitalianiinportogallo.it/wp-content/plugins/super-forms/uploads/php/files/0e6a9253b5b9785677f0bc9e8515fd84/zolabavemixibigijapus.pdfIn PDF document text
    • http://chikatere.com/Upload/files/purufeguvapisagaribinax.pdfIn PDF document text
    • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac7509357ac---larurelajaluve.pdfIn PDF document text
    • http://sorokolaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/sajaluwowadiwazo.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_off0000d1fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1FD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ea14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA14 11484 bytes
SHA-256: 0aeddd30350b3b637e1410695bcff5e36aa36f7a1a550a51e35b70372a303215
font_02_sfnt_off000104d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104D4 18612 bytes
SHA-256: 0b105fc32841518b5a2404e63c75e2d0d817510db66b2eaf6185a53ae268589b