Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d868b16b5c19058…

MALICIOUS

PDF

76.9 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: b80d96e1d52b54bc033abf0e952694a1 SHA-1: 0cd4739b028657d0cd9d6d8170241971a95b791d SHA-256: 7d868b16b5c1905835b5efd4dcdef474899643ecf3dce33d61feb401c212548c
154 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and ML classifiers, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm, with numerous URLs pointing to compromised WordPress sites and disposable hosting, suggesting a phishing or malware distribution scheme. The embedded URLs and the nature of the heuristics strongly suggest the document is designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6393

Heuristics 5

  • 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
  • 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

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