Malicious PDF — malware analysis report

Static analysis result for SHA-256 c002c1412c78b5cc…

MALICIOUS

PDF

88.7 KB Created: 2021-08-09 14:59:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: b2cdff1109764964eda41a3046d5b6cd SHA-1: a36034fc6fe9c88c795c0cb327cb3419d3eae32d SHA-256: c002c1412c78b5ccde5d1258538246dcee3341793d9b8b1f3e748702a6613144
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged by ClamAV as a phishing trojan and by an ML classifier as malicious. It contains a large number of embedded URLs, many pointing to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The presence of these links indicates an attempt to deliver a phishing or malware payload, aligning with the characteristics of a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9919

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://crysiq.ru/uplcv?utm_term=how+to+do+the+frozen+money+glitch+gta+5 PDF link annotation
    • https://simovi.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160770b1df412b---poreso.pdfIn PDF document text
    • http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b01e9e4b185---deramudivonuwotisulume.pdfIn PDF document text
    • https://numen-wow.com/userfiles/cloud//files/nojomifitisaxeritipaga.pdfIn PDF document text
    • https://adbetelparaguay.com/wp-content/plugins/super-forms/uploads/php/files/570a0a1111ec9e1dfc24f5ba4816d318/vekiwubobabomixofus.pdfIn PDF document text
    • http://lilit-realty.com/wp-content/plugins/super-forms/uploads/php/files/colch3jfa7usjqo1l2tsggbf05/tabisakudinasuwafato.pdfIn PDF document text
    • http://www.radio-kum.si/data/files/28943694483.pdfIn PDF document text
    • https://pluckywize.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d5c7d9ddc61---vuxosopalazitovoxivo.pdfIn PDF document text
    • https://xn----7sbabak5acz7byau.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/abf73aa103503e61b1f8f1749cacbd0f/66993207400.pdfIn PDF document text
    • https://www.traveltimevipp.com/wp-content/plugins/super-forms/uploads/php/files/792148bf416bfc4daa7d7110ce5fa6d6/70334638077.pdfIn PDF document text
    • http://richmediahouse.com/admin/uploads/file/nalomewawakivefogilasipi.pdfIn PDF document text
    • https://dfa-finanz.de/wp-content/plugins/formcraft/file-upload/server/content/files/160737ec89c93d---pizogoxelivuxowejiwek.pdfIn PDF document text
    • http://nccutrackandfieldalumniandfriends.com/clients/2/2c/2cea5a7e730406ee40dfbbde6098010c/File/senejulogibofumodo.pdfIn PDF document text
    • http://konferencii.org/web/uploads/assets/file/mexonivowi.pdfIn PDF document text
    • http://vidol.nl/userfiles/file/gifodaz.pdfIn PDF document text
    • https://perleyparish.org/wp-content/plugins/super-forms/uploads/php/files/830d7524fecf667eebb801506f15d3b3/vigawijomarojozegaberiz.pdfIn PDF document text
    • https://sk-developers.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073a9f126b52---vilegigemikofovu.pdfIn PDF document text
    • http://hasici-pristroje-eshop.cz/files/file/66289071637.pdfIn PDF document text
    • https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b013a79d041---35129459433.pdfIn PDF document text
    • http://studiomontironi.eu/userfiles/files/6928816594.pdfIn PDF document text
    • https://eyestech.in/wp-content/plugins/super-forms/uploads/php/files/p0epc9lf78fhj0th9t6l7lm87t/bufurureveredenusowavi.pdfIn PDF document text
    • https://motionslam.com/wp-content/plugins/super-forms/uploads/php/files/74b870bdebd24167651c99a14f8a0374/vijumej.pdfIn PDF document text
    • http://sieuthikhoacaocap.vn/upload/files/fezojokovorek.pdfIn PDF document text
    • https://towa-aaa.jp/userfiles/file/bagotur.pdfIn PDF document text
    • https://admonks.ru/wp-content/plugins/super-forms/uploads/php/files/616a310e76aea41eca7a497cffef661f/238104888.pdfIn PDF document text
    • http://ibb-online.ru/f/file/36364630473.pdfIn PDF document text
    • https://autopsrus.com/ckfinder/userfiles/files/xumati.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_off0000f277.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF277 17984 bytes
SHA-256: be5c7c0e25d834ae561e000cc539aa1e9432e28bfb6b0838b61ca4d93b3fe3e3
font_01_sfnt_off000121f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121F0 11140 bytes
SHA-256: 49f741bf028ff3299e3a6e137126545a678edfb79cfacd02313ed4be570213d6
font_02_sfnt_off00013ba0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13BA0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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