Malicious PDF — malware analysis report

Static analysis result for SHA-256 02624e95393d94b3…

MALICIOUS

PDF

90.1 KB Created: 2021-08-04 15:23:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 07d46aca7bb286b14de9893593b9cef5 SHA-1: 3e953345fdd9d15c45d5290c7bbf9aaccdd4fd45 SHA-256: 02624e95393d94b3d04e842aa50512e5591127b059cee0a39386701585ceffa4
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded URLs, many of which point to compromised WordPress sites or disposable domains. This behavior is characteristic of a link farm used to distribute phishing content or malware. The ClamAV detection and ML classifier further support its malicious nature, indicating it is likely a phishing or trojan delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://queure.ru/uplcv?utm_term=what+are+the+5+major+beliefs+of+christianity PDF link annotation
    • https://www.grandeprairie.org/wp-content/plugins/formcraft/file-upload/server/content/files/16081027f1bb3f---jazazarifo.pdfIn PDF document text
    • http://ecbpolska.pl/wp-content/plugins/super-forms/uploads/php/files/7b8f3f96684f7db69b5aca5c5d89bd29/42084661780.pdfIn PDF document text
    • https://miguktour.com/FileData/ckfinder/files/20210714_8799302CB99FFE24.pdfIn PDF document text
    • https://cursosadistanciayonline.com/medios//files/63251593552.pdfIn PDF document text
    • https://phoenixknights.co.uk/wp-content/plugins/super-forms/uploads/php/files/b5f03d77c7a90bd444b6a6ebf20c51f0/60565438905.pdfIn PDF document text
    • https://cvsc.co/userfiles/file/keginivomikafinufawaka.pdfIn PDF document text
    • https://ksuskalology.com/images/file/vizidulamakesofomoji.pdfIn PDF document text
    • http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608818ef0a301---16555731120.pdfIn PDF document text
    • https://riondene.ch/img/uploads/file/2751242034.pdfIn PDF document text
    • http://smartvoicecom.com/userfiles/34779091990.pdfIn PDF document text
    • https://www.advids.io/wp-content/plugins/formcraft/file-upload/server/content/files/160870b9484c31---towidemisavoj.pdfIn PDF document text
    • https://xn----7sbabak5acz7byau.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/ea14e49a940afcd7a305250d54a01c97/79065286258.pdfIn PDF document text
    • https://gearforfree.com/wp-content/plugins/super-forms/uploads/php/files/te2o0lctjia72c6kje51qu6oeq/20428658454.pdfIn PDF document text
    • https://luxurytravel-show.com/wp-content/plugins/super-forms/uploads/php/files/a9510924cb75b12aab6d483407523883/79493316666.pdfIn PDF document text
    • https://riolospettacoli.it/filesUploads/file/8167403596.pdfIn PDF document text
    • https://performanshost.com/calisma2/files/uploads/pesozapuwobowavegolilir.pdfIn PDF document text
    • https://thinkglobalcompliance.com/ckfinder/userfiles/files/68939690219.pdfIn PDF document text
    • https://www.siemers-deutschmann.de/wp-content/plugins/super-forms/uploads/php/files/kradqgvgo4ccutm32jf8j8b7ru/14617107268.pdfIn PDF document text
    • http://dongshengcable.com/images/upload/File/60965805696.pdfIn PDF document text
    • http://sakirnoopo.ru/wp-content/plugins/super-forms/uploads/php/files/12b68bc9aee361836500b2439136ab8d/tilimi.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/wawix.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

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_off0000fa1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA1A 17472 bytes
SHA-256: 9b7c73601263256c96652b5d053febd3d5c529db4f87c8dff33fd4757106b3e3
font_01_sfnt_off000127f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127F6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001400d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1400D 11112 bytes
SHA-256: 118e6ffc64591de77d506c6b46e1acc352c9ad1fca41580e8c6b1dc64d4d4ff3

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