Malicious PDF — malware analysis report

Static analysis result for SHA-256 dce93bc90d0cb8b4…

MALICIOUS

PDF

89.2 KB Created: 2021-06-29 16:47:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 8e2be794b8aaa4460576f175ed3d0855 SHA-1: 44eb492cb2973bc708bf573e3cd17ba8ba3c893a SHA-256: dce93bc90d0cb8b4e128c1b2d0be2491f42c7c303f77e3ac53f893328dc90476
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was identified as malicious by ML classifiers and ClamAV, with multiple heuristics indicating it functions as a link farm pointing to compromised CMS upload directories. The embedded URLs, such as http://cageart.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608921246ee24---xololawoka.pdf, are likely used to host or redirect to malicious content. The PDF structure and embedded links suggest an attempt to disguise malicious activity as legitimate document content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/230d22a8c1ef07e763d925be21a8997b/lesegaxaluzoseradaket.pdf In PDF document text
    • https://arizonapoolcontractor.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a28288a0fb2---74180862818.pdfIn PDF document text
    • https://www.ciabrini-immobilier.com/wp-content/plugins/super-forms/uploads/php/files/u0b4bjdehfhb2drr2agcpk3b2c/gidusinadolefebinadofuz.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a7084e8af18---53974673265.pdfIn PDF document text
    • https://metroguards.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160962af674997---38803897684.pdfIn PDF document text
    • http://asja-doll.ru/userfiles/file/jogudukoviduridefokaz.pdfIn PDF document text
    • http://cageart.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608921246ee24---xololawoka.pdfIn PDF document text
    • https://www.a2zmedical.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b4904638eb3---veziguki.pdfIn PDF document text
    • https://tort-art.ru/userfiles/file/vekovovivebaxanikis.pdfIn PDF document text
    • http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/160b0437a7f696---34193074735.pdfIn PDF document text
    • https://audit-advisers.com/userfiles/file/regesowofubuvubuk.pdfIn PDF document text
    • https://responsible-tourism-alliance.com/content_file/files/57438340588.pdfIn PDF document text
    • https://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607805ebc8632---65873580529.pdfIn PDF document text
    • https://www.cibaospalaser.com/wp-content/plugins/super-forms/uploads/php/files/jjhuf7lqa7h2mj4t76bn8ks2dp/pofevunusegafiburosibus.pdfIn PDF document text
    • http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/16095ad4539ef1---58297692351.pdfIn PDF document text
    • http://ilovegabal.net/fckeditor/_upload/file/54713452403.pdfIn PDF document text
    • https://www.conkite.com/wp-content/plugins/super-forms/uploads/php/files/f8b852ca53a78a7292de60a8b5d43ec4/27123688183.pdfIn PDF document text
    • http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/1609a6eb277501---43307710036.pdfIn PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/77340e820430b772ef7f12c6de7e1595/fefenuguwab.pdfIn PDF document text
    • https://stopserv.ru/files/file/59264183054.pdfIn PDF document text
    • https://www.techsrollout.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608723e9c5d97---zotisibawimima.pdfIn PDF document text
    • http://padgettlawreunion.com/clients/79772/File/fevepe.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=open+source+pdf+to+jpgPDF 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_off0000fc16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC16 16612 bytes
SHA-256: a9e04d82c65b4dc974149cefd3407044cb8987a58ef9a9f885547482b084c3cd
font_01_sfnt_off00012719.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12719 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013f30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F30 10752 bytes
SHA-256: f30ac76d8636a1ab81c1e2f8f7d976c2b9542c534d0dc4e7a82da5bace6b04b3

Open this report in the interactive analyzer, or submit your own file for analysis.