Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd78f998ac97f762…

MALICIOUS

PDF

96.9 KB Created: 2021-07-30 21:20:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19
MD5: 1f2429d06a57ef353e8c0a9031bf2921 SHA-1: 20fe566e34f998cf6f8d370cfb6848499d2a29c5 SHA-256: cd78f998ac97f762d0c4952c338626bd8ced6b73849cec18c4af5fda09e05e24
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9673

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 https://halobysciton.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077db5fbcc3e---fovitokujavawu.pdf In PDF document text
    • https://www.servicioscalibrados.com/wp-content/plugins/super-forms/uploads/php/files/47e3a85c33f626f6ab34b6ba9f5f9f48/lamuxibizidunovese.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160808d044a911---87103957896.pdfIn PDF document text
    • http://lobi.md/userfiles/file/zopipekovetutason.pdfIn PDF document text
    • https://envomask.com/wp-content/plugins/super-forms/uploads/php/files/c302ac2ac1a4ab85f61cade7e3224bf6/28740212794.pdfIn PDF document text
    • http://letresorellebio.it/userfiles/files/4721191854.pdfIn PDF document text
    • https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a2d381bb12---satedog.pdfIn PDF document text
    • https://www.paparazzirestaurant.com.au/wp-content/plugins/super-forms/uploads/php/files/fd3a6592d4c748abfd14a4076e8f4fcb/vefopetapexexagazasosa.pdfIn PDF document text
    • https://evocative.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160b7a8f5e0bd7---pekidusenifidikizej.pdfIn PDF document text
    • https://cbolean.com/wp-content/plugins/super-forms/uploads/php/files/v4iltesee8bsm5nimk3i9j6ev2/nenovudaxadobesunixi.pdfIn PDF document text
    • http://brainbond.ro/userfiles/file/21975481794.pdfIn PDF document text
    • http://prodesign31.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1608d7092210be---61624632317.pdfIn PDF document text
    • https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608e0b0a3390c---todizipiletifovumidakud.pdfIn PDF document text
    • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/160a3441728763---talopojos.pdfIn PDF document text
    • https://evergreencans.com/userfiles/file/20644231884.pdfIn PDF document text
    • http://citadelcaralarms.com/userfiles/file/80902773968.pdfIn PDF document text
    • http://architettosbaffo.com/userfiles/files/xutavixukoxunen.pdfIn PDF document text
    • http://archinfo.ru/uploads/file/10499162091.pdfIn PDF document text
    • https://iominneapolis.com/wp-content/plugins/super-forms/uploads/php/files/eaeadd199f6fe03afc2965628c5f2b79/23218930405.pdfIn PDF document text
    • http://inewbus.com/wp-content/plugins/super-forms/uploads/php/files/cetid1fug979p6oclh315ppvj4/wuris.pdfIn PDF document text
    • https://gdr.co.il/wp-content/plugins/super-forms/uploads/php/files/dec79a24cbc339d6449d9a8d5235bf22/zuwekabasoxipamumup.pdfIn PDF document text
    • https://temahr.hr/files/59345717277.pdfIn PDF document text
    • http://brukbet.com/user_images/file/41959511917.pdfIn PDF document text
    • http://www.aluvascientific.com/UserFiles/file/71044046075.pdfIn PDF document text
    • https://luyenthitoeic.info/userfiles/file/78764847434.pdfIn PDF document text
    • https://asiatravel.kg/wp-content/plugins/super-forms/uploads/php/files/4c4d6e8faf35e2aef9d05eea26317a6f/59750435915.pdfIn PDF document text
    • http://www.fattyweng.com.sg/wp-content/plugins/formcraft/file-upload/server/content/files/1607e88003af43---lapuzabivinebuxogiwisi.pdfIn PDF document text
    • http://inter-travel.hu/_user/file/jafadatimimuwemexuzadom.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=butterball+electric+turkey+fryer+recipesPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010a8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A8D 1924 bytes
SHA-256: d04d2bde600a167e1f609eef95f6b341e3f95a69f54e34457530835b3c30a63a
font_01_sfnt_off0001136f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1136F 10748 bytes
SHA-256: 518616377c4a116f18ea0f095be51b3140aaf8835a5b647ecd59f4386b9ded4f
font_02_sfnt_off00012c2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C2A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off0001443c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1443C 17792 bytes
SHA-256: f0879083edf8f7c07c48af60a14b11d6289f41ce6d1273f9be31c69e31ac6be5