Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f372c23ddae04fa…

MALICIOUS

PDF

86.3 KB Created: 2021-07-02 11:52:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 0224fd7d96f079ae492757935777b7d4 SHA-1: 179171c4dbafe397a29cbaa764f70bcf9a0436d8 SHA-256: 0f372c23ddae04fa08845354d86d70ae9c3415176d727e2bac0a78ddc6c1a4e0
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 a link farm designed to distribute malicious content or phish users. ClamAV detection and ML classification strongly indicate malicious intent, likely related to phishing or malware delivery via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9848

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 http://anonelectronics.com/admin/fckeditor/editor/filemanager/connectors/php/upload_jpg/file/202104300210396936.pdf
    • http://dafangtour.com/fckeditor/userimages/file/vofidesitositanugezu.pdf
    • https://hafa-verein.de/wp-content/plugins/super-forms/uploads/php/files/264875db90c86c8d94a77c8ee886a29b/42116894620.pdf
    • http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afa49731ffd---xepugoxofufixirusi.pdf
    • http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/1606e4076d7923---23205689159.pdf
    • http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/7ff371f8f8cfcca252cf044de8398027/xukorobexipepozevupejofi.pdf
    • https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/h5t4mumc9qtrr6ijs9behjtmko/loxitu.pdf
    • https://palcev.ru/userfiles/file/niroliz.pdf
    • http://kondicionery-ivanteevka.ru/upload_picture/file/vufoxadutomelimizemo.pdf
    • http://amexeuro.com/an3_Uploads/file/vusevunijuzorite.pdf
    • http://blog.crowdly.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609eb7a8e8d04---puluganisigujudi.pdf
    • http://therealmccoyfamilyreunion.com/clients/f/f9/f9ea119420dddc0cc5ac7622830b9f68/File/dalilasi.pdf
    • http://naplesredeals.com/userfiles/files/pidevel.pdf
    • https://medsplus.us/admin/images/file/gupolurulezoweri.pdf
    • https://bowenpainter.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac7987d77c9---14160663843.pdf
    • https://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2e19a27cad---dunajototojosanetunenup.pdf
    • https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/9657b2c0123f5ba1bcb502dad1a04c72/97790289541.pdf
    • https://indacphuc.com/wp-content/plugins/super-forms/uploads/php/files/i0cc6iite7lc1bqn7dbcs80i52/32976260317.pdf
    • http://adhdesign.de/userContent/files/20210610201513-sevekekusakugeril.pdf
    • http://rainbowcaterers.in/userfiles/file/paxexuralesuxibag.pdf
    • https://postscriptproductions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a9ce8123b9---buxasopijixurefegodateg.pdf
    • https://sakitonus.ru/wp-content/plugins/super-forms/uploads/php/files/96d45db95ad50f99b6ff894ed93c6960/41639642123.pdf
    • https://sygimportaciones.com/wp-content/plugins/super-forms/uploads/php/files/3nl8mgh4lf117hsvnegrq2ejbp/10871692410.pdf
    • https://discoverapartmentsforrent.com/wp-content/plugins/super-forms/uploads/php/files/961f9cd53282f0b8c7e2b5b9a324fff9/lajexawe.pdf
    • https://angelsstaff.com/uploads/file/59366368028.pdf
    • http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af76bb7ba05---zipiripo.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=street+hot+rods+for+sale
    • 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_off0000ede8.bin
98c7374d85e4f909423ddd4d1165fd012dc76e86187f1018f9470b3fb73de018		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEDE8 10328 bytes
font_01_sfnt_off00010556.bin
8a5bb541890482cfda782c7b52d731b3faffb3b243c97057d91bd302bb2301cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10556 17652 bytes
font_02_sfnt_off000133ff.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x133FF 16792 bytes

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