Malicious PDF — malware analysis report

Static analysis result for SHA-256 1214a37281ac5113…

MALICIOUS

PDF

104.0 KB Created: 2021-06-29 10:13:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 9260c2ee163d55a2946a1e6c543dc0e6 SHA-1: 7a77a839d0758ec09151cef093a2ab953ed02ba4 SHA-256: 1214a37281ac51131398d457bf767422e141d57dee5a36f9a492fd500408f853
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged by ML classifiers and ClamAV as malicious, exhibiting characteristics of a phishing lure. It contains numerous links, many pointing to compromised WordPress sites or disposable hosting, suggesting an attempt to redirect users to malicious content. The document's structure and embedded links indicate it is designed to trick users into downloading further malware or visiting phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9919

Heuristics 7

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=ecommerce+software+requirement+specification
    • http://sl1971.com/clients/5/51/517263f0417f9379c67e6eba0e0bdfe8/File/16220736572.pdf
    • https://ccveg.org/wp-content/plugins/super-forms/uploads/php/files/8o00mpvt1dgv7mkcvsihc2dgmi/16020427690.pdf
    • http://bazis-expertiza.ru/ckfinder/core/connector/php/files/6142632622.pdf
    • http://baovephuongtroi.com/vietkiendo/upload/file/maliruludasibote.pdf
    • https://culturasiapamplona.com/guiarte_userfiles/files/66939446407.pdf
    • https://www.cukoyem.com.tr/wp-content/plugins/super-forms/uploads/php/files/p17te5l5egv22l7fvep8ph7lu5/tukozexo.pdf
    • http://www.kizkulesikizogrenciyurdu.com/public/ckfinderuploads/files/kurokike.pdf
    • http://k-yoga.org/file_upload/spaw_upload/file/20210613041836.pdf
    • http://freeski.hu/freeski/file/megajumeki.pdf
    • https://www.reflectionuk.com/wp-content/plugins/super-forms/uploads/php/files/letbm9qpe95d40pskpcq2epq3t/fapepefekolerelepelozebo.pdf
    • http://kingalbertltd.com/uploadedfiles/file/dupadadivogosaratexage.pdf
    • https://xn--80aaaglcftt5alesfkk7f.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/928cf27348ca25f90def766612caf157/xurixakajozikixubuwaxezaz.pdf
    • http://kururlaub-ungarn.de/bilder/files/11968525098.pdf
    • http://shinex-auto.com/userfiles/file/guwejidizomosejubum.pdf
    • http://claudiodauelsberg.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609a2af680baf---segebavitugizomanazinama.pdf
    • http://iideree.org/wp-content/plugins/formcraft/file-upload/server/content/files/16097449820acd---kalujafedixafuxip.pdf
    • https://hotel-la-licorne.fr/userfiles/file/32202642762.pdf
    • http://argra.rs/wp-content/plugins/formcraft/file-upload/server/content/files/16071912f3574b---femuli.pdf
    • http://ats-dz.com/userfiles/file/95613663384.pdf
    • https://zhansq.cn/upload/file/78944971226.pdf
    • http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/7abhtr0pka8op5lk67au2353o1/14561134996.pdf
    • http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607c69902045a---wigurejozezokefebejupej.pdf
    • http://securitydirect.it/wp-content/plugins/super-forms/uploads/php/files/6b1b5841b44816c36f9c17ca2c8ae996/79428747754.pdf
    • https://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba1d4f85219---nojop.pdf
    • https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/a6f0e4f34757288e2f9af862d2f7b509/zefag.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_off000130b7.bin
0323fef1cf0ff9985d5ff1be88c1c2e886a12ba107eedfc76504ea82dc63108c
pdf-font-stream PDF embedded font (sfnt) at offset 0x130B7 10912 bytes
font_01_sfnt_off00014a09.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x14A09 16792 bytes
font_02_sfnt_off0001621b.bin
a34914440b03d359fe36d7bc20cf6ac046a1167a0c6a3618bd768421548f8fda
pdf-font-stream PDF embedded font (sfnt) at offset 0x1621B 18160 bytes