Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dc3e15caa9221a2…

MALICIOUS

PDF

83.3 KB Created: 2021-08-29 13:50:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-30
MD5: 166efda382f48e55bd8db9d6b2206689 SHA-1: 1f103f513becf74bb1249b56c05c1763b09a20ee SHA-256: 1dc3e15caa9221a216479b8a1929621255b3044e8a0de7ab1da2ace3282cda3e
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

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://drafthe.ru/uplcv?utm_term=puppies+for+sale+in+southern+maryland PDF link annotation
    • http://wsp.pl/userfiles/file/14889924143.pdfIn PDF document text
    • https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/mqiae4cgrpd201rp3htu9uj01n/13419246040.pdfIn PDF document text
    • https://www.limratechnologies.net/wp-content/plugins/formcraft/file-upload/server/content/files/160860f9beb59b---17869696570.pdfIn PDF document text
    • http://elskup.pl/images/assets/file/94823348230.pdfIn PDF document text
    • http://herbexindia.com/ckfinder/userfiles/files/35938735244.pdfIn PDF document text
    • http://krevue.cz/UserFiles/File/27712649579.pdfIn PDF document text
    • http://ff-engineering.com/userfiles/files/71413514692.pdfIn PDF document text
    • http://www.naturapreserved.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b60c9981ab2---24849462962.pdfIn PDF document text
    • https://primax.fr/wp-content/plugins/super-forms/uploads/php/files/b5pdr9s0es314j9d0hdp9dfr15/59153505357.pdfIn PDF document text
    • http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/1610f0d5f3b22e---kotalurawidexifa.pdfIn PDF document text
    • https://dgssu.com/upfolder/e/files/20210818213021.pdfIn PDF document text
    • https://rosemonttherapy.health/wp-content/plugins/super-forms/uploads/php/files/lb4lsuc33teekbrbc76s23tak8/31323326390.pdfIn PDF document text
    • http://capmar.eu/userfiles/file/nedelu.pdfIn PDF document text
    • https://fotojursa.cz/userfiles/file/56386259889.pdfIn PDF document text
    • https://www.bbmnetlicitacoes.com.br/cms/ckfinder/upload/files/fezekikekiz.pdfIn PDF document text
    • https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/7b8388acdda8e2bbbd894497a1fc42bd/wixadokiwixexavudu.pdfIn PDF document text
    • http://ventima.ru/userfiles/file/ravexelebogadumurinofoxu.pdfIn PDF document text
    • https://watfordfairtrade.org/app/webroot/img/files/96467732687.pdfIn PDF document text
    • https://nothingbutsafetyglasses.com/userfiles/file/97670318961.pdfIn PDF document text
    • https://www.asahinadigital.com/wp-content/plugins/super-forms/uploads/php/files/7jheu70kguhqqfbigebathl4nm/tamima.pdfIn PDF document text
    • http://askort.pl/Upload/file/36851949799.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_off0000de99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE99 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f6b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6B0 10976 bytes
SHA-256: 358db5c08ec9797b8f337cf9a9d746a7f9bb77ef213b13f7fe9537473e9b4e0d
font_02_sfnt_off00010ffb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FFB 18480 bytes
SHA-256: b0cf63310401c4fecaa09a06590e8ac4752eada6c5ff08b5ede41fd600282a7d