Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e297dd665f97932…

MALICIOUS

PDF

80.8 KB Created: 2021-09-05 22:16:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: c93f1784ee95d21f1b5e17257fbe8b79 SHA-1: da519c191d87930d6a893ec94fb0b09419379e61 SHA-256: 2e297dd665f9793274eb475100e7eced9ab5710c65fa248ed784a24cfee3a04c
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, flagging it as a phishing trojan. It functions as a link farm, with numerous URLs pointing to various websites, including those hosted on compromised CMS platforms. The primary purpose appears to be directing users to potentially malicious or compromised sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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://krevue.cz/UserFiles/File/vemugekitojaxoretarovot.pdf
    • http://myxroad.com/upload/userfiles/file///nefixerukinipi.pdf
    • https://copyjokertw.aw6.tw/uploadfile/qu4_qu106_com/files/24024802698.pdf
    • https://www.hotelamoha.it/wp-content/plugins/formcraft/file-upload/server/content/files/160b27b8df3ba7---gewidem.pdf
    • https://actioncoach.com.my/wp-content/plugins/formcraft/file-upload/server/content/files/16079eb9aac174---76692239505.pdf
    • http://www.vivelamusica.es/wp-content/plugins/formcraft/file-upload/server/content/files/1607a865d6f3a6---wujabeluxemolotu.pdf
    • https://macleanpinesdrivingschool.com.au/wp-content/plugins/super-forms/uploads/php/files/64e2f63af5041df8eb8a2801ee990249/mewuxewiporutur.pdf
    • http://doubles301.jp/files/ckeditor/files/falagagurun.pdf
    • http://staging.impactredevelopment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607279fcad2cf---fumagifivas.pdf
    • https://formapolis.it/wp-content/plugins/super-forms/uploads/php/files/f075fcfe879266b8be2280de6a0633a1/92271895526.pdf
    • http://www.k-24.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c4af2709e0b---45816661807.pdf
    • http://iwish-cosmetics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d6b321f224---82095566225.pdf
    • http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1608cc0757bfe7---40296700174.pdf
    • https://www.certificagreen.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c66c81563e---29832897111.pdf
    • https://xn--fiqa735be48e.com/upload/files/32979350390.pdf
    • https://accesoriosalmayor.com/images/userfiles/file/zafesobuni.pdf
    • http://christembassydocklands.org/wp-content/plugins/super-forms/uploads/php/files/a57e834ae67c018e5627f8c614423c00/risigatugef.pdf
    • http://inncredel.com/uploads/26654912996.pdf
    • http://vankouwenenmastop.nl/UserFiles/file/92576624154.pdf
    • https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609b8add9c016---devobegigatofiw.pdf
    • http://anvlaw.com/userfiles/file/72630961543.pdf
    • https://istanajpdua.com/contents/files/rewinoxizaxenokixukixefun.pdf
    • http://makingtheturngolf.com/clients/9/92/925d9bae4ecf380f28dbe0e1390c16eb/File/69292319112.pdf
    • https://communeouchamps.fr/userfiles/file/86386941610.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=perfect+english+grammar+comparatives+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_off0000d5ce.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xD5CE 16792 bytes
font_01_sfnt_off0000ede0.bin
e4c7b736d912e0a744d4ddd1264a47c3ad5b9e181e89ca2c14bd40bf002523a5
pdf-font-stream PDF embedded font (sfnt) at offset 0xEDE0 18128 bytes
font_02_sfnt_off00011c39.bin
310365893f8399445f00659aa034e89fe4c83896a222dda918feb8026cd1fa1b
pdf-font-stream PDF embedded font (sfnt) at offset 0x11C39 11136 bytes