Malicious PDF — malware analysis report

Static analysis result for SHA-256 f217a517b74bc339…

MALICIOUS

PDF

90.5 KB Created: 2021-07-01 10:10:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 2e0d571e22fff3483d384de2a3dae686 SHA-1: 7e72e29b4a42479f826508484d91aed1692a5bb3 SHA-256: f217a517b74bc3392fac45fae0a3ff08a77bcf15a65695ee5279897b638a4ea5
156 Risk Score

Malware Insights

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

The PDF contains a large number of links, many pointing to compromised WordPress sites, suggesting it functions as a link farm for phishing or malware distribution. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or trojan delivery. No scripts were extracted, but the structure and URL patterns are indicative of a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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://414movement.com/wp-content/plugins/super-forms/uploads/php/files/56c7349f724bd8d83af36468bde1a798/zaxebawariniveg.pdf
    • http://faradtvandor.hu/picture/userfiles/file/75652893032.pdf
    • http://www.iqubz.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac5c5aefd31---talizuvumexibakubevanuk.pdf
    • https://elnativocoffee.com/silver/upload/files/radetexijivuk.pdf
    • https://inchiriereelicopterromania.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16097e46ec2d25---moroj.pdf
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bddbf67c845---54821705076.pdf
    • https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/16075d22fd4735---dosipekapepase.pdf
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/d1cbaa721db987decfb9c068fe9579c5/jazunomujelejedabup.pdf
    • http://peak-experience-japan.com/vofud.pdf
    • https://jiptv.nl/wp-content/plugins/super-forms/uploads/php/files/u04oi9k26or4lnsrrs0qkckb50/kafiz.pdf
    • http://charivne.info/images/file/65384681871.pdf
    • http://inlygiaylynhua.com/upload/files/mevixexibesapigefizan.pdf
    • https://vdbergelectro.nl/wp-content/plugins/super-forms/uploads/php/files/7190b43a0aa22e226aa447bef232692c/33994915169.pdf
    • http://freemansphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608792b203aba---64251183892.pdf
    • http://apcmagon.com/userfiles/javamugavapedam.pdf
    • http://maihome.hu/admin1/file/xixagatomafajij.pdf
    • http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bead57dc9b0---kuxek.pdf
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a51b9d9d6a5---sibosod.pdf
    • http://spc1991.com/ckfinder/userfiles/files/zifir.pdf
    • http://dodici12.ru/wp-content/plugins/super-forms/uploads/php/files/3f86ph7sc9q6ap7tlqdolif503/vikexesosowixumagurufubi.pdf
    • http://sns.hu/_user/file/difofawuxidodugog.pdf
    • https://eastmanllc.net/ckfinder/userfiles/files/puzogipinas.pdf
    • https://vishalahospitality.com/ckfinder/userfiles/files/9246648117.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=acromegaly+and+prolactin
    • 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_off0000fe29.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xFE29 16792 bytes
font_01_sfnt_off0001163b.bin
608e4a64ce969924fd556227bf10d4bede628c614bd7918f0b9821efc3a6b8c8
pdf-font-stream PDF embedded font (sfnt) at offset 0x1163B 17084 bytes
font_02_sfnt_off00014301.bin
93d6433a0b06eab860497de3a39c5096770c66547b83bbbf248ba37318428fed
pdf-font-stream PDF embedded font (sfnt) at offset 0x14301 10784 bytes