Malicious PDF — malware analysis report

Static analysis result for SHA-256 2eded2d1a03d24fd…

MALICIOUS

PDF

83.4 KB Created: 2021-09-02 15:29:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: c6cfbf29408b796d08d92d844484d71b SHA-1: 6d8dfec85e76f603a8535c564467c4780069596c SHA-256: 2eded2d1a03d24fd5baa01292c3a0b9110926662d684d1830b187341b59afe6a
156 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, indicating a link farm designed to lure users to potentially malicious sites. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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://pixomot.ru/uplcv?utm_term=financial+accounting+1+questions+pdf
    • http://www.haztartasigepszakuzlet.hu/pics/file/7498173798.pdf
    • http://erkerlaender.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bf8d7a9cd2a---9918135281.pdf
    • http://donovaly-ubytovanie-safran.sk/web/userfiles/file/mubasizogegid.pdf
    • http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16078b89216dac---47749663942.pdf
    • http://papienbanana.com/user_file/file/sekefenowitegipobatupu.pdf
    • https://mashura.co/userfiles/files/65061223849.pdf
    • https://eccdc.org/application/webroot/userfiles/file/zapusepujipikikobixawisa.pdf
    • https://vdbergelectro.nl/wp-content/plugins/super-forms/uploads/php/files/80261edd33d0f8e0b78f32fdcf03c924/zizexiwakugugarixejexa.pdf
    • https://pacie.vn/web/uploads/files/41845905713.pdf
    • http://eko-inwest.eu/upload/file/jijanapoxosi.pdf
    • https://villatoscana-pi.it/userfiles/file/barubuxonevesazozalimuxom.pdf
    • http://allegroescrow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080bacd5bd67---92937157575.pdf
    • https://ktmcollege.org/public_html/userfiles/file/52277018317.pdf
    • https://cr2tek.com/userfiles/Proj_Name/files/39093120142.pdf
    • https://www.lindopoint.it/wp-content/plugins/super-forms/uploads/php/files/accb57b567f9847d2a787d469e5d58c9/2011775319.pdf
    • http://gift-founder.com/archive/upload/files/25110002989.pdf
    • http://florylaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/26773819464.pdf
    • http://chip-chup.hu/upload/file/31619215068.pdf
    • https://avantkart.com/wp-content/plugins/super-forms/uploads/php/files/hs5t61d6aoifkp6sdgi9jcg9m9/34831914284.pdf
    • https://balance-global.com/wp-content/plugins/super-forms/uploads/php/files/u40m178c7vcfogr9dnu6cuhevg/94516393122.pdf
    • http://imbirimbir.ru/files/tomasepenibejeneno.pdf
    • http://www.makattakasinti.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079ddca12e84---biroxif.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_off0000e36b.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xE36B 16792 bytes
font_01_sfnt_off0000fb82.bin
3034b74f8fa8bce55b980785e58d0922f6bdc0744b0f11c288c139e17e28df80
pdf-font-stream PDF embedded font (sfnt) at offset 0xFB82 10968 bytes
font_02_sfnt_off0001149b.bin
abc099e8e7d4c7805892a0ea0ece9fd09236074a9c38f432136206f54740bf2a
pdf-font-stream PDF embedded font (sfnt) at offset 0x1149B 16760 bytes