Malicious PDF — malware analysis report

Static analysis result for SHA-256 47c4e9130041167c…

MALICIOUS

PDF

86.2 KB Created: 2021-06-26 08:59:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: ed29d483634f3f135b400bac8de32afc SHA-1: 2c5f4761b2e1c35d2c71dce9c15c916394dee369 SHA-256: 47c4e9130041167c236c9d218ffac29f6c452a545ab86f6b6a311da6dda29bf4
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier with high confidence. It contains numerous embedded URLs, many pointing to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The primary attack pattern involves luring users through these links, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9922

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://chcial.ru/uplcv?utm_term=download+film+korea+warning+do+not+play+sub+indo PDF link annotation
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cb4e9d7566d---3311299606.pdfIn PDF document text
    • http://drstevealbrecht.com/wp-content/plugins/super-forms/uploads/php/files/405c4967039054cba449f1f53776ca8b/62144285352.pdfIn PDF document text
    • http://www.yoko-ono.be/images/userfiles/file/rimalopidanitesajamakef.pdfIn PDF document text
    • https://eyestech.in/wp-content/plugins/super-forms/uploads/php/files/6pudg4v53ea6bgieic622tiokl/93919694296.pdfIn PDF document text
    • http://candientushinko.com/images/file/95064135967.pdfIn PDF document text
    • https://lastcallslc.com/wp-content/plugins/super-forms/uploads/php/files/f724e81ab39dc7784cd3dc3f4d1cdf89/66048040102.pdfIn PDF document text
    • https://advancedbusiness.co/wp-content/plugins/super-forms/uploads/php/files/97fcd39070ed808894dfcc312d909d5b/51088174106.pdfIn PDF document text
    • http://sharise.net/Uploadfiles/files/46539628958.pdfIn PDF document text
    • https://webgirls-studio.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f4916c9278---1318844343.pdfIn PDF document text
    • http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160c68a179cd0b---balopajinufaxi.pdfIn PDF document text
    • https://ceccarbotosani.ro/userfiles/file/58827240341.pdfIn PDF document text
    • http://kaitosushisb.com/uploads/files/74498136752.pdfIn PDF document text
    • http://allamericannursing.com/userfiles/file/37934637605.pdfIn PDF document text
    • https://bluebeakbranding.com/wp-content/plugins/super-forms/uploads/php/files/8097047e0e2144a9472470e0708db666/guxafezujunomu.pdfIn PDF document text
    • http://laclonghotel.vn/upload/files/97641669120.pdfIn PDF document text
    • https://wlao.on.ca/wp-content/plugins/super-forms/uploads/php/files/d49248da4554280773aa1b2f12d6cf14/17732501792.pdfIn PDF document text
    • http://bfr-bialapodlaska.pl/userfiles/file/14213337508.pdfIn PDF document text
    • https://humanistbeauty.com/wp-content/plugins/super-forms/uploads/php/files/a3toftdt4bhl19r0qsnrt7c00m/54867336687.pdfIn PDF document text
    • https://jdbailbonds.com/wp-content/plugins/super-forms/uploads/php/files/987d0f47d7724d98ede82c7548d54d70/topolilarejukebe.pdfIn PDF document text
    • http://nicenpos.com/userData/board/file/fujakokedeb.pdfIn PDF document text
    • http://come2menorca.com/images/file/36361706767.pdfIn PDF document text
    • https://datajournonepal.org/files/76709965613.pdfIn PDF document text
    • http://artospace.com/pics/file/xuvetig.pdfIn PDF document text
    • http://iideree.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606effa90f3a9---nipimepezopovozasawip.pdfIn PDF document text
    • 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d450.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD450 16376 bytes
SHA-256: 0c133022d1e9883d2ff7035cf84f1fa0be9cfa0d671266bc5a940283bc0f9855
font_01_sfnt_off0000ea79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA79 11376 bytes
SHA-256: bf1236a2976c713d58ba0998ee48fb7a86d19b5626ee4752aa96b216c9b689ee
font_02_sfnt_off000104e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104E1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00011cf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CF3 16868 bytes
SHA-256: 78222d5d9b4b465e9f0d5fcae03b2d4f9b86558826d76ac72418330a4d993f46

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