Malicious PDF — malware analysis report

Static analysis result for SHA-256 29c050d75ee27975…

MALICIOUS

PDF

85.7 KB Created: 2021-09-20 02:11:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: b98c435eeb43121f9a666884e931dc6d SHA-1: 807b0bb922ca79e0e5b944adeb5be96129538b88 SHA-256: 29c050d75ee27975380884d2b0d1df262ade26f158339987be88ec43037dea3c
236 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

This PDF document was flagged by ClamAV as Pdf.Phishing.Trojan and exhibits characteristics of an advance-fee scam or a lure to install browser extensions. The document contains numerous external links, many pointing to compromised CMS uploads or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The primary attack pattern involves social engineering to trick users into downloading or installing further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://cructi.ru/uplcv?utm_term=how+to+set+alarm+on+my+android+phone
    • http://kernenshepler.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/vedokiligirafaledojiged.pdf
    • https://alwaysthesame.pt/site/upload/file/lulamal.pdf
    • http://architettoannalisatinelli.it/userfiles/files/folukojur.pdf
    • https://i-try.tw/upfile/files/2021/09/04/gizorevawo.pdf
    • http://thicongdiennuocmiennam.com/uploads/files/9939132309.pdf
    • http://acetuitioncentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1613bbbf9c61dc---14367184696.pdf
    • http://6nergy.fr/6nergy/sites/default/user/file/sokibixigumakabuvori.pdf
    • http://fruhmann-elektrotechnik.at/karoregubifulujeguna.pdf
    • http://informerfitness.com/wp-content/plugins/super-forms/uploads/php/files/83bcfc9966914f28aa53a9608c07e998/7750672415.pdf
    • https://multimetrics.com/ckfinder/userfiles/files/56287922484.pdf
    • http://finadev-groupe.com/userfiles/file/lebuxilidanuwobaraxijal.pdf
    • http://falconltd.pl/cache/file/48981308811.pdf
    • http://vinczeandlaszlo.com/upload/64295034214.pdf
    • http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1613767050ddb5---476309144.pdf
    • https://www.hit-education.com/wp-content/plugins/super-forms/uploads/php/files/9nl8gpdlu8r3jfkstglqtok7fr/bojuruwenipulesokutokuzi.pdf
    • https://ecoinkworld.com/wp-content/plugins/super-forms/uploads/php/files/dd282504816c83c837a3ba698f1fb975/95051918182.pdf
    • http://eikenhorstgroep.nl/userfiles/file/makavumemabewowirojelelun.pdf
    • http://weldingplaza.com/files/file/51546981676.pdf
    • http://files.ibiza-ferien.de/file/73479706162.pdf
    • https://marljivo.hr/UserFiles/files/3967334309.pdf
    • http://szyoujin.com/UploadFile/file/20210902121758635.pdf
    • http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161401b1711f7f---43147685505.pdf
    • https://storage-in-motion.com/wp-content/plugins/formcraft/file-upload/server/content/files/161307c13cf708---vanaxonubivakadikozajuvi.pdf
    • http://gerd-pollak.de/userfiles/file/zixewido.pdf
    • https://ever.dacola.com/upload/files/legobudikalijezi.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9a5.bin
aab6b302610e2bc988356699dbfb84888f967bfebfb348a15a90379efc63f30c
pdf-font-stream PDF embedded font (sfnt) at offset 0xE9A5 10848 bytes
font_01_sfnt_off00010280.bin
99e91ea0000fc3107d90224957f75fed2d12ca45d6f57b9d7c33cf0477507d3c
pdf-font-stream PDF embedded font (sfnt) at offset 0x10280 17620 bytes
font_02_sfnt_off00013098.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x13098 16792 bytes