Malicious PDF — malware analysis report

Static analysis result for SHA-256 e27140ee162051cf…

MALICIOUS

PDF

85.5 KB Created: 2021-08-05 07:51:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 38aea7a975d83fe8327b24a29bf044ae SHA-1: b0cde34a31cdf8f15400206ba7e1a2862249ef2f SHA-256: e27140ee162051cf0470eda570f6dbbc8e93c19564b7c57830720209276f0af4
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics as malicious, including a high-confidence ML classifier and ClamAV detection. It functions as a link farm, containing numerous URLs pointing to compromised or disposable hosting domains. These links are likely intended to lure users into phishing sites or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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://klubkanine.com/home/klub/public_html/ckfinder/userfiles/files/1388284297.pdf In PDF document text
    • http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f212bdd66c---nesurijulukak.pdfIn PDF document text
    • https://777mto.com/contents//files/45769235968.pdfIn PDF document text
    • https://ascinfratech.com/clientprojects/trading/file/65225133327.pdfIn PDF document text
    • http://pphu-joanna.pl/fckpliki/file/70875672536.pdfIn PDF document text
    • https://spectrumohio.com/wp-content/plugins/super-forms/uploads/php/files/8c9bf93d47e233c52f77594ad3676737/musubazibogumajosefi.pdfIn PDF document text
    • https://ercrs.org/wp-content/plugins/super-forms/uploads/php/files/mf9aq1cb4e184l9i8hmblc6895/jonagidubobanos.pdfIn PDF document text
    • http://kayamedbursa.com/userfiles/file/28727677330.pdfIn PDF document text
    • http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/160d8fa3517441---girukipapisewapip.pdfIn PDF document text
    • http://vyveva.eu/UserFiles/File/75912886188.pdfIn PDF document text
    • https://awlights.com/wp-content/plugins/super-forms/uploads/php/files/d08daad845bb0231d667b644756a5fd7/71513282521.pdfIn PDF document text
    • https://dermo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079c42553303---52379116272.pdfIn PDF document text
    • https://www.albispanaderia.com/wp-content/plugins/super-forms/uploads/php/files/7006cbebd1054be5fc37fb783463ad7c/kasilubavukepemotip.pdfIn PDF document text
    • https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad194fd0bc1---jidulexebafigolagadivek.pdfIn PDF document text
    • http://foodchemsino.com/d/files/nemikamemijix.pdfIn PDF document text
    • http://www.aamuhsv-madisonalumni.org/files/files/114686838.pdfIn PDF document text
    • https://dpengineers.info/admin/userfiles/file/88429870498.pdfIn PDF document text
    • https://dfa-finanz.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bdf0e805b5b---91271741184.pdfIn PDF document text
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160d2f21b66fa5---63518428852.pdfIn PDF document text
    • http://jjmcp.jp/userfiles/Image/file/53026188369.pdfIn PDF document text
    • https://lcd96.ru/wp-content/plugins/super-forms/uploads/php/files/9bb345c6c94cf7dda40eda672503d023/93407300843.pdfIn PDF document text
    • http://fashioneducation.ru/userfiles/file/vobiti.pdfIn PDF document text
    • https://www.revistadefiesta.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c877fd0e97c---ripiwuk.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=fanuc+alarm+list+pdfPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea34.bin
01e952ad0b164a7140db03a9f15d9bce73c923c0c37e879a0543d2de89966d50		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA34 10608 bytes
font_01_sfnt_off0001025a.bin
17d89f12f93893f5929143832a5ac5c848939d838fcc1559128e70bb536f4ae0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1025A 17192 bytes
font_02_sfnt_off00012f44.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12F44 16792 bytes

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