Malicious PDF — malware analysis report

Static analysis result for SHA-256 c29c2700eea75f00…

MALICIOUS

PDF

83.9 KB Created: 2021-08-03 13:14:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 74798e599e4ffdfef6178ac204d0b4b4 SHA-1: 96e766817f620211789bdb6076de2364e7384159 SHA-256: c29c2700eea75f00d146f20bf9f6ccf1239bdec1ea3b01eebc91b9c0ceaec4c4
154 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to compromised WordPress sites. This behavior is indicative of a link farm designed to redirect users to malicious content, likely phishing pages or malware download sites. The ClamAV detection and ML classifier further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8912

Heuristics 5

  • 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
  • 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://crewmak.ru/uplcv?utm_term=ccna+model+question+paper+pdf PDF link annotation
    • https://admonks.ru/wp-content/plugins/super-forms/uploads/php/files/be561e7fa4cdb357f70d2d053b5fa6ae/lijopekuwilosixukejefuwe.pdfIn PDF document text
    • https://craftsmancuttingdies.com/wp-content/plugins/super-forms/uploads/php/files/fp4gl6sinqbhplhhadqfkvqgok/71531630598.pdfIn PDF document text
    • https://catwalkdogcome.com/editor_upload_image/file/77501093585.pdfIn PDF document text
    • https://netcsemege.hu/ckfinder/userfiles/files/rowexadesivigironat.pdfIn PDF document text
    • https://readxyz.com/wp-content/plugins/super-forms/uploads/php/files/501b34392879e76e0cd134ead93dd1e4/48779486890.pdfIn PDF document text
    • https://zoomkish.com/basefile/zoomkishcom/files/52343299286.pdfIn PDF document text
    • https://wecafephuket.com/wp-content/plugins/super-forms/uploads/php/files/6a3vbme65h7kh6u323q3o2o9a8/dazosubagizobopikazipuv.pdfIn PDF document text
    • https://europeancustomtailor.com/wp-content/plugins/super-forms/uploads/php/files/d5a2a64793b1cade974f63537ea4e7e6/79603795032.pdfIn PDF document text
    • http://glassco.ca/clients/9/99/99aa1728c1dafa3cf8773a75727b87c9/File/xafifazosofusivoloseku.pdfIn PDF document text
    • https://mosoptagro.ru/wp-content/plugins/super-forms/uploads/php/files/12dfbe8b51257c2ac01bd3937d680a3f/vamir.pdfIn PDF document text
    • http://ngor2-3.com/file_media/file_image/file/duzop.pdfIn PDF document text
    • http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/160847cacebd60---64912339524.pdfIn PDF document text
    • http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070b0d9643d3---nejetefubenixit.pdfIn PDF document text
    • http://kimwendelldesign.com/ckfinder/userfiles/files/53679080670.pdfIn PDF document text
    • https://alllegaltask.com/wp-content/plugins/super-forms/uploads/php/files/5t106oc1nllla85c6fmaofi32g/94997685606.pdfIn PDF document text
    • http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bed471d9b92---gogogamani.pdfIn PDF document text
    • https://absolut-fit-and-dance.de/wp-content/plugins/super-forms/uploads/php/files/t84938ol5gnttub5fuvvh7ed84/pexikirizeko.pdfIn PDF document text
    • https://markeishahall.com/wp-content/plugins/super-forms/uploads/php/files/63ea26b3faf5f3d84a6a1f49db09d978/vuvabowutewavo.pdfIn PDF document text
    • https://mobistore.co.nz/wp-content/plugins/super-forms/uploads/php/files/861674d0563215e2612b95068c026d60/18056792856.pdfIn PDF document text
    • http://www.vitrierbxl.be/wp-content/plugins/formcraft/file-upload/server/content/files/16089606618f11---76067487909.pdfIn PDF document text
    • https://werbemittelag.ch/upload/file/87798868067.pdfIn PDF document text
    • http://lifestyleufa.ru/wp-content/plugins/super-forms/uploads/php/files/2da667f95eaca456bbccb3225be5047c/76122122020.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010e69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E69 19252 bytes
SHA-256: 3bf374f4ef84f687c4c1e80c5c28ecd27381c460614f4ddfd064511c2a9f2fb7

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