Malicious PDF — malware analysis report

Static analysis result for SHA-256 00bd747a34c96621…

MALICIOUS

PDF

84.4 KB Created: 2021-06-28 19:25:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: 22f8710674da1d21994649d5d638517b SHA-1: e854f24ac917a7ced7d7be5ef92f74a896689b8f SHA-256: 00bd747a34c966212a760cf241a582b817448a3f8f5ad31dde84974d2fe0f0a6
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The sample is identified as malicious by ClamAV and an ML classifier, indicating it's likely a phishing or malware delivery mechanism. It contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting a link farm designed to redirect users to malicious content. The PDF structure itself does not contain readable content, but the presence of these links strongly implies an attempt to exploit users by directing them to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/0a591f1e6b097ff737024cdbdcc55c3d/32985722997.pdf In PDF document text
    • https://indacphuc.com/wp-content/plugins/super-forms/uploads/php/files/no91tl9e21cg897a5mp4h442va/95401596087.pdfIn PDF document text
    • https://alteanetworks.fr/img/file/sejiketuf.pdfIn PDF document text
    • https://unique.global/wp-content/plugins/super-forms/uploads/php/files/af579f5c959cd56626908de8670d579b/44491446311.pdfIn PDF document text
    • http://skolicka.eu/foto/images/file/puxugarizuzifopo.pdfIn PDF document text
    • http://fritz-fahrlaender.ch/download/20332514704.pdfIn PDF document text
    • http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607652bf52434---8519541716.pdfIn PDF document text
    • http://golden-candies.ru/webroot/files/files/29946819908.pdfIn PDF document text
    • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160916f822487a---59412235016.pdfIn PDF document text
    • http://ajtoablakcentrum.com/_user/file/jofegedakado.pdfIn PDF document text
    • http://beerskiboot.com/img/upload/file/diwetokotesumidiro.pdfIn PDF document text
    • https://apoc.com.au/wp-content/plugins/super-forms/uploads/php/files/d05f1b103ea41b1d99cac2168d6f51f8/94121063112.pdfIn PDF document text
    • https://nuregio.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a5ae2b6f29d---lufizarid.pdfIn PDF document text
    • https://www.shopveriamici.com/wp-content/plugins/super-forms/uploads/php/files/avgvebvb15plf6mmh38bmhin8f/89185214492.pdfIn PDF document text
    • http://phdpecs.hu/userfiles/files/88863301690.pdfIn PDF document text
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/072aefd7e098e29d4e1db83d0cc92148/lesijopolifosega.pdfIn PDF document text
    • http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607cc287237d0---77027932089.pdfIn PDF document text
    • https://skvely-kup.cz/files/file/visalu.pdfIn PDF document text
    • http://hum-lucknow.org/test/fckeditor/file/22594077545.pdfIn PDF document text
    • http://plncse.hu/php_data/file/49329222617.pdfIn PDF document text
    • https://www.chartsunlimited.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/16072fbcfb514b---zejelebirupides.pdfIn PDF document text
    • https://medok18.ru/wp-content/plugins/super-forms/uploads/php/files/00acf7646e95c0581c772f16144e32e7/48427076154.pdfIn PDF document text
    • http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/1607284561360e---79439336462.pdfIn PDF document text
    • https://www.lorenzofranzone.it/wp-content/plugins/super-forms/uploads/php/files/6f7578b60613b16bd0a14577f3808e66/30557870735.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=how+do+i+convert+an+indd+file+to+pdf+without+indesignPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e433.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE433 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fc4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC4A 11140 bytes
SHA-256: cf0f7c2a4253c9721199149d62f47175bb330fb0cf8cf96e2a251dea48e39677
font_02_sfnt_off0001160d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1160D 17672 bytes
SHA-256: 1dbbf99e79e518c0571931152d92bc0f77b62819f1c4638704b8875ea76af890

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