Malicious PDF — malware analysis report

Static analysis result for SHA-256 117d640fdda86389…

MALICIOUS

PDF

89.7 KB Created: 2021-07-14 10:14:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: f27ed0d7bb33a3ed6a85158786b79944 SHA-1: 214a992c6688c7684c9ffefa252082976a16d265 SHA-256: 117d640fdda86389b02f663c0f44629aa2b88ff8a76987429c606e7f0aa6e847
196 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ClamAV and an ML classifier. Heuristics indicate it functions as a link farm, with many URLs pointing to compromised CMS upload storage and disposable hosting, likely to obscure the true destination. The document's content and heuristics strongly suggest an advance-fee scam lure, aiming to trick users into believing they are due a prize or parcel and must take action.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

Heuristics 7

  • 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.
  • 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://www.alertgy.com/wp-content/plugins/super-forms/uploads/php/files/4207624772d54bb918af05a88fea6d94/lozotobazewoji.pdf
    • http://aleeblog.com/wp-content/plugins/super-forms/uploads/php/files/rhutnnn00ek9la2ok90gd9btp6/28927044088.pdf
    • http://travelport.pl/userfiles//file/17080748840.pdf
    • http://tamlaproject.com/userData/board/file/sulowadedo.pdf
    • https://msr-hudsonproperties.com/wp-content/plugins/super-forms/uploads/php/files/179561f03dc3fe81ccfeeb9030b42754/13875155722.pdf
    • https://evocative.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7e785522e---35046110519.pdf
    • http://charivne.info/images/file/namofoxulovepobuzezu.pdf
    • http://www.iamgoingto1996.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3086cccf65---22743384544.pdf
    • http://muslimofwestbengal.com/mwb/editor_upload/files/99712501845.pdf
    • https://cahayaapi1.com/contents//files/3250113513.pdf
    • http://novaserv.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cca299fd3b---jewopizanetekafiwibiwidej.pdf
    • https://hoffmanowska.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16090ffed5e4a1---demedibo.pdf
    • http://iziusb.com/userfiles//file/2196524214.pdf
    • http://www.kickcommerce.com/userfiles/file/64171745216.pdf
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/k7789k4mns27emnv4f9hnllnm2/53613663800.pdf
    • https://calmoinc.com/upload/editor/file/tenupezuxakodiwukul.pdf
    • https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609874dd257d0---rejitizefubabapogorimo.pdf
    • http://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16073699d7a6f9---80165384410.pdf
    • http://phdpecs.hu/userfiles/files/pebofixemitewobopexibaz.pdf
    • https://www.tanyadantus.com/wp-content/plugins/super-forms/uploads/php/files/5e4ffbdc06b43f29979584f84816a57b/mujuvifidigejegoxiv.pdf
    • http://smartcookieacademy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085463691c11---4292736256.pdf
    • https://hightechrustremovers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160aab35627072---62313758340.pdf
    • http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc9d0c7a5d---vuxibux.pdf
    • http://rchs1964.com/clients/5/58/580abc73d3aac4ea3a2bdd7c75327783/File/vejike.pdf
    • https://webtraffic.ch/wp-content/plugins/super-forms/uploads/php/files/ki3nofsksbg4h0vjfkhfqu96tb/gutosujiwugirilumo.pdf
    • https://mygamedaysports.com/wp-content/plugins/super-forms/uploads/php/files/2d7c4ac31209da27418d271b48824c3f/kazize.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=ge+11695+universal+remote
    • 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_off0000fb20.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB20 16792 bytes
font_01_sfnt_off00011337.bin
6a8a2a1fcbc7e189355369202c71ac34465496fa41a09cddcafa41a6fbfd8a1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11337 10996 bytes
font_02_sfnt_off00012cd5.bin
d93a08d501e44c26ce489010b7189e984ce787808767cab7d803609bfbdaccbf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12CD5 17108 bytes

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