Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cf36b319814a000…

MALICIOUS

PDF

80.5 KB Created: 2021-09-03 20:09:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: dc980a738520aabb77418c4994c55574 SHA-1: 3acccda7b6c51269f9c0bb58039230fa5c14a2ac SHA-256: 2cf36b319814a000d40ed097c671905b4074cf6805637d365c0fdf385b5d7e1f
204 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and multiple links to external sites, some of which are hosted on compromised or disposable domains, indicating a phishing or scam attempt. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' strongly suggests the document's purpose is to trick the user into paying a fee for a non-existent prize or parcel. The embedded JavaScript likely facilitates the redirection to these malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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 http://mtlebanon62.com/clients/5/5e/5ee551a8be14a26d7d76bc5e90dd1372/File/feliwabewu.pdf
    • http://sea-cruise.ru/ckfinder/userfiles/files/43461020347.pdf
    • http://www.creativitaecomunicazione.it/js/lib/ckfinder/userfiles/files/mogive.pdf
    • http://www.magicapro.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609b1497d181a---zojagozazufixaveruwigesov.pdf
    • https://habibitours.net/ckfinder/userfiles/files/duxig.pdf
    • https://udachi.co.th/wp-content/plugins/super-forms/uploads/php/files/1aeokevg0l2cidmg479mn5dmfh/zukomepaxuzil.pdf
    • https://thesmithgrouphouston.com/wp-content/plugins/super-forms/uploads/php/files/7f632540b0ced6b54be703ba9e8bdb37/37835908748.pdf
    • https://mindweave.co.uk/wp-content/plugins/super-forms/uploads/php/files/ukda1j7v1qgb2bt6nu90c193pq/52361964598.pdf
    • https://digireg.dk/upload/50986462226.pdf
    • http://ambvetfanini.eu/userfiles/files/xefugum.pdf
    • https://elitestrategyglobal.com/wp-content/plugins/super-forms/uploads/php/files/7f8cabe20b6167bd42474e86389a9045/paxanewogojo.pdf
    • https://camile.vn/wp-content/plugins/super-forms/uploads/php/files/0fdv9q9dhjm2aruhapvdhkvhu6/lavitamorumi.pdf
    • https://fobiy.net/wp-content/plugins/super-forms/uploads/php/files/4e3737cda5749af5830fee081f68e4aa/bosog.pdf
    • http://bularz-auto.pl/images/userfiles/file/51522110438.pdf
    • https://bataretak.com/img/files/file/zilazip.pdf
    • http://livestreaming.group/wp-content/plugins/super-forms/uploads/php/files/obormrhfkneid753h314ml4aupt69nkp/76720437139.pdf
    • http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b9abf689853---71257693615.pdf
    • https://www.elshandmadedesign.nl/ckfinder/userfiles/files/30841401237.pdf
    • https://shayangroup.net/wp-content/plugins/super-forms/uploads/php/files/18a168a9c47c328e5064112fc4cfc917/bomepezedisaponura.pdf
    • http://al-bandak.com/userfiles/file/19102566410.pdf
    • http://kunbot.com/upload/files/turagozuzamib.pdf
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/7f382820d35dc63fa615cfc7f3a3325d/802813822.pdf
    • https://canadianrelocation.net/wp-content/plugins/formcraft/file-upload/server/content/files/160858693327f6---fexasibuzowunu.pdf
    • https://taevlingar.se/images/pages/file/9532228669.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=developing+reading+comprehension+questions+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_off0000d3c1.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xD3C1 16792 bytes
font_01_sfnt_off0000ebd8.bin
05c05803bd8b62935d386fcbc07916baab2bb7a5edeba5748d103e2086c433f0
pdf-font-stream PDF embedded font (sfnt) at offset 0xEBD8 11380 bytes
font_02_sfnt_off000105f3.bin
253ea87642c6259815d4d8b8c538c2bb854d1273faafdf81b9524c8cec7fe29e
pdf-font-stream PDF embedded font (sfnt) at offset 0x105F3 17992 bytes