Malicious PDF — malware analysis report

Static analysis result for SHA-256 e215215f62f5207a…

MALICIOUS

PDF

93.9 KB Created: 2021-06-30 13:45:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: a5e958b984fa50f43709244dbbc2ce1e SHA-1: 25242f6ec4b72afd7f1fb258022be319b6235b06 SHA-256: e215215f62f5207ac214fa196ce0a46037d716c4f528b3c865bd397cad39741f
164 Risk Score

Malware Insights

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

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links, many hosted on compromised CMS platforms, suggesting a link farm designed to redirect users. The presence of a 'download button' heuristic further supports the lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9918

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.siemers-deutschmann.de/wp-content/plugins/super-forms/uploads/php/files/qfocicdvsloqurkr1hvlbnak2j/13811365291.pdf
    • http://itkaufmann.com/images/fckimages/file/51873641184.pdf
    • https://tigercabinetry.com/wp-content/plugins/super-forms/uploads/php/files/11db3bc95b8df541cded2e0bbe9d32e3/pupibasibepozise.pdf
    • https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d0fcc4e6e5---felolufiroritodeka.pdf
    • http://pwr-tech.ru/userfiles/file/mudadizojidupom.pdf
    • https://rebates.forex/wp-content/plugins/super-forms/uploads/php/files/o6e20tboemqu141gm40jbv3cn5/28354866847.pdf
    • https://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/acc3fea37ae80f33fd04fa1eeb1ad343/46838060929.pdf
    • http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/160ac161de6473---jajutazavifevozo.pdf
    • http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/16082250c2f38b---panewemolagiditulelemite.pdf
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/ea1734dbef8c8f5f7d97aaeae47ba4c0/22914547621.pdf
    • http://cgl.lu/userfiles/files/32713563219.pdf
    • http://ottotech.center/userfiles/file/3022099067.pdf
    • http://schouteninterieurwerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c52be9a8410---13348172030.pdf
    • https://humantouchtranslations.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/16098bccd86aac---niladadotetasonoji.pdf
    • http://luxmeterthai.com/ckfinder/userfiles/files/27181663893.pdf
    • https://ateneoarbonaida.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084ca9e48d7c---65810428059.pdf
    • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/160a4a2e670118---58801892453.pdf
    • https://shining4u.com/wp-content/plugins/super-forms/uploads/php/files/561b9cd21418ab44f2628a7c7351c2e7/90761588180.pdf
    • https://pluckywize.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a005494029c---gopifavida.pdf
    • https://lllk.ru/wp-content/plugins/super-forms/uploads/php/files/8783eefe1b6795a53910f84037c4d35b/jajitewom.pdf
    • http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7b1b35e36---nenevofoxozorozanenetu.pdf
    • http://dailitara.lt/bites/uploads/file/gosozenotizufed.pdf
    • http://ampletrekking.com/userfiles/file/fomifaloxadukenutironodi.pdf
    • https://aquaticlandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079b783580d8---75650978215.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=extract+pages+from+pdf+free
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f461.bin
9677d386b16bf386d3e10f7817125b4de254bebe72c062a439a9ad42c08bd040		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF461 10808 bytes
font_01_sfnt_off00010d32.bin
c7cbe0300f09221a6f07760828d2beeb107e93fe21570eab93da8cbcef33ed1a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10D32 17444 bytes
font_02_sfnt_off00013abd.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13ABD 16792 bytes
font_03_sfnt_off000152ce.bin
982e20f1632361179aa692f3b2947f8ed1dc6bd65d5bb5a4735891513c6764b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x152CE 16120 bytes

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