Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e4179b4d589d16b…

MALICIOUS

PDF

84.3 KB Created: 2021-09-02 06:07:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 7122df404c1fc352feb788f62cb2f924 SHA-1: 9ca43b61c0a89bb532fcd94bb1d051fd69fbfb01 SHA-256: 2e4179b4d589d16b7943c852aa827451666f6b93b8f9713b9d80f76ddb57e9dd
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier as malicious. It contains numerous links, many pointing to compromised WordPress sites, suggesting it's designed to lead users to malicious content. The presence of multiple external URIs and link farms indicates a likely attempt to distribute malware or conduct phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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://queure.ru/uplcv?utm_term=buster+keaton+safety+last PDF link annotation
    • http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c75c82ec03e---zinuvaborin.pdfIn PDF document text
    • https://useoneconvo.com/wp-content/plugins/super-forms/uploads/php/files/4633bf683379d78b36b922b7071d09a3/nuvuwawukevad.pdfIn PDF document text
    • https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/fd7dc4de8bfa3060d55647e9b8b08739/lurimidabazajogupobeju.pdfIn PDF document text
    • https://anmoul.com/userfiles/file/dutejawex.pdfIn PDF document text
    • http://www.itbaloch.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8f997210b1---2173914552.pdfIn PDF document text
    • http://libron.pl/fckupload/assets/file/waragulimuxenotaled.pdfIn PDF document text
    • http://ros-audit.com/i/up/file/53417817262.pdfIn PDF document text
    • https://regiefranchet.fr/userfiles/files/xukiwojiloxudaj.pdfIn PDF document text
    • http://net-marketing.hu/images/files/wepasebukilevoj.pdfIn PDF document text
    • https://panificioilcavaliere.it/userfiles/files/riwuzexunojupat.pdfIn PDF document text
    • http://sciencevier.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8398bd16c6---nizakupapikifijokuxovif.pdfIn PDF document text
    • http://avanti-kuhni.ru/upload/files/27872966421.pdfIn PDF document text
    • http://ranaghatpchsschool.org/userfiles/file/bokij.pdfIn PDF document text
    • http://allycatering.com/userfiles/70171553557.pdfIn PDF document text
    • https://xn--80aaa1anac6cg.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/72e9131b06b3a8833a6090d8674c6c4b/zozetefovizonenu.pdfIn PDF document text
    • https://flomogroup.com/upload/files/sulabufalewofakemozo.pdfIn PDF document text
    • http://www.buildonhope.org/file/69696472992.pdfIn PDF document text
    • https://amatnieks.lv/pictures/image/xetunututawipow.pdfIn PDF document text
    • https://medok18.ru/wp-content/plugins/super-forms/uploads/php/files/2e7016ca31463fb7e99378ca2ea3784d/78311438025.pdfIn PDF document text
    • http://www.temaricerca.com/entry2013/admin/ckfinder/userfiles/files/rutaxawonopovi.pdfIn PDF document text
    • https://costumeworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611706f647721---pizanagewosov.pdfIn PDF document text
    • https://nonbodepsg.com/uploads/files/93287290341.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_off0000e023.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE023 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f835.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF835 19616 bytes
SHA-256: 456246877091d1d2f51ca70b7a8bb76666125c292b87a7ca3b2922e20aef6a5d
font_02_sfnt_off00012a42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A42 10472 bytes
SHA-256: 7f398d3c80c919540882bb8986e493c2446596071b069ec2989213d0dec3660e

Open this report in the interactive analyzer, or submit your own file for analysis.