Malicious PDF — malware analysis report

Static analysis result for SHA-256 0eee8bfcd193ca80…

MALICIOUS

PDF

118.3 KB Created: 2021-06-29 01:32:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 38f4b649dccbf91adff32bef4b150bea SHA-1: 66ebf3688736831626e50a61ecb518232aeea370 SHA-256: 0eee8bfcd193ca80ade2dd46406d0e109435cf3e8f85c4cb2d7a9df9a6bbf733
156 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to multiple compromised CMS upload directories and disposable hosting sites, indicating a phishing or redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to lure users to malicious content or further stages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9761

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://pvsystreports.com/wp-content/plugins/super-forms/uploads/php/files/774g1b65h1lcjc8t2rumm515p1/17724091316.pdf
    • https://repare-ton-smartphone.com/userfiles/file/zepivezugapinakojogilusa.pdf
    • http://bezpieczna-strefa.pl/wp-content/plugins/super-forms/uploads/php/files/c5b9fee406fa9d2a94599ed074c876ef/zafuzanuwibomis.pdf
    • http://best-infosystems.com/userfiles/file/regisogopakugewikam.pdf
    • http://www.uppld.org/wp-content/plugins/formcraft/file-upload/server/content/files/16077041fa05cd---poxopadi.pdf
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/d88ef4baa3959a70d269326fac2a7068/pikatonelukuwokolisuwimo.pdf
    • https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a1ec35ef3e---volovus.pdf
    • http://aarogyamedico.com/userfiles/file/nasojevuk.pdf
    • https://www.deuba.info/wp-content/plugins/super-forms/uploads/php/files/smn6at301ds667k7j1ivnj9kp1/sugogexoxopere.pdf
    • http://theopenhouseclub.com/wp-content/plugins/super-forms/uploads/php/files/6719612bea570bfd316518412fdca48d/58644493592.pdf
    • https://www.kadeavenue.com/wp-content/plugins/super-forms/uploads/php/files/50313b4740469a3ae62329bc52acf05c/vokek.pdf
    • http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/036ce475b8790775efac133c7687d9d8/31199850785.pdf
    • https://maxim-catering.de/wp-content/plugins/super-forms/uploads/php/files/6apligssojt24auo8u5i8d0fhe/tevebuzudulesolu.pdf
    • http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/1609ca6c6a788c---1492721949.pdf
    • http://belhavenhighschoolalumni.com/clients/13962/File/texosakimelubelevowono.pdf
    • https://www.mii.net/wp-content/plugins/super-forms/uploads/php/files/61a939606740a64c01de7f3502d54d1c/58703992113.pdf
    • https://gtsonline.nl/wp-content/plugins/super-forms/uploads/php/files/an00brso2ccate79ufvjc6v8k0/49731396704.pdf
    • https://kvartira-zalog.ru/wp-content/plugins/super-forms/uploads/php/files/9aed568ebcc61eb96c2d2b49c17be9b9/nowoduxawi.pdf
    • https://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/129b6f0a59c367cce89f3286bab77444/16164928459.pdf
    • https://autoschiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/16075d8cc7153f---55852247516.pdf
    • https://levin-dent.ru/wp-content/plugins/super-forms/uploads/php/files/a501e80d81ff8064dbda525cd837c96c/70587769625.pdf
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/c1njupfl30eheh6unsqor13vnp/wonesug.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=the+old+kingdom
    • 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012acd.bin
64d67d102145f06a397803382e5e1674c14a1a88edd011e42206da9fe6f2a653		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12ACD 18132 bytes
font_01_sfnt_off00015b13.bin
06221cfc27fcb5e12360e7239ba0f75b9324db4e3ed6e95be2a53f0929352181		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15B13 17324 bytes
font_02_sfnt_off000174f3.bin
6904a9b36ba4b60ad15b34085c04a4d7e7f130922d4f50928cf2e53e5cabdb02		 pdf-font-stream PDF embedded font (sfnt) at offset 0x174F3 12084 bytes
font_03_sfnt_off00019ca7.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19CA7 16792 bytes
font_04_sfnt_off0001b4be.bin
a0f1aa23af7fabd1cde2065000e53830db06e054d5fad5af3cd5d79444cba8d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B4BE 10220 bytes

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