Malicious PDF — malware analysis report

Static analysis result for SHA-256 1199dd6c62f0c89d…

MALICIOUS

PDF

84.1 KB Created: 2021-07-08 05:32:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 59d3038f37d7d32bd280e9e6018009a8 SHA-1: caa78523e34ac5258c6bc5eae619fe0884317665 SHA-256: 1199dd6c62f0c89d7f37e9b46ae2f31bc28c8dba1f60c3069d5111033c4f0400
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for Pdf.Phishing.Trojan. The numerous embedded URLs point to compromised WordPress upload directories, suggesting a phishing or malware distribution scheme. The file's structure and URL patterns are consistent with a link farm designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/876bd766f4f48db126625056806fdc8d/xigunadakinexugijako.pdf
    • http://orgue-chantepie.info/FCKeditor/upload/file/xukidejep.pdf
    • http://botosani.ro/img/uploads/file/88415947011.pdf
    • https://www.c2commercial.com/wp-content/plugins/super-forms/uploads/php/files/d68280ee73d577cd845569efc8ce7c17/duxuve.pdf
    • https://dentinale.eu/wp-content/plugins/super-forms/uploads/php/files/4d6a80e01f4125c853765df6148e4213/31691986464.pdf
    • https://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/2d842e564ed784645133080cc4ac3f34/pepiwuwunokejozaluxefamu.pdf
    • https://bandotrading.com/uploads/file/83080738492.pdf
    • https://xn----8sbaavnccwq4am.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/fc9a171b0fbb6ac400447feea585abbe/44302362521.pdf
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/f7d4334c3bd2779c2884a4a2b0976e19/laroniteluwijegokosodiz.pdf
    • http://herningbadintra.dk/app/webroot/upload/files/toroseku.pdf
    • https://forkidsvietnam.vn/wp-content/plugins/super-forms/uploads/php/files/ones40snkcd9scpjv93u72k7u3/pevisabisogetif.pdf
    • https://mrmusicfoundation.org/wp-content/plugins/super-forms/uploads/php/files/c4ml3r1nb2n2sck30qr78378s7/fuxoxadufolilaromudopefib.pdf
    • https://ipic.vn/userfiles/file/87240685034.pdf
    • http://soflcops.com/clients/83267/File/tavas.pdf
    • https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/160874b945f674---givujal.pdf
    • http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/1i9usdetb9oqvrqia9vvb2dta0/wimivuwig.pdf
    • https://bdata.vn/upload/files/jakitobe.pdf
    • https://amesmedicalservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160837effef858---poniz.pdf
    • http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16077a3813f6bf---kogirasojotijetetazu.pdf
    • http://coiffurenais.com/userfiles/file/vedutipigawosudi.pdf
    • http://www.canadavisaservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098b631e7459---tulotidumefiwij.pdf
    • http://clair-environnement.eu/catalogue_dynamique/file/nagovumurakoraguxa.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=simple+meaning+of+statistics
    • 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_off0000e4f0.bin
72809081ec770b25b3ab3027a656b1530aaf3594c36f225f9941a9f0037ba1d1
pdf-font-stream PDF embedded font (sfnt) at offset 0xE4F0 10800 bytes
font_01_sfnt_off0000fdcc.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xFDCC 16792 bytes
font_02_sfnt_off000115de.bin
dd0f4a36134d49de5e1a29d27051bc0429135b0eb046587772b9298b2b7e63cb
pdf-font-stream PDF embedded font (sfnt) at offset 0x115DE 17280 bytes