Malicious PDF — malware analysis report

Static analysis result for SHA-256 e76eaeab63821aa0…

MALICIOUS

PDF

69.5 KB Created: 2021-09-25 14:03:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 6561a5b99b7b6480a1fc931953d23ca1 SHA-1: 73db66faaed4f59f108c65bf9e8ce156076b3d00 SHA-256: e76eaeab63821aa07e6c17f5a744da17dcd8cf4e697cac4d381bd24ff052ba0d
176 Risk Score

Malware Insights

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

The PDF was identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing lure. It contains numerous links pointing to compromised CMS uploads and disposable hosting, suggesting an attempt to redirect users to malicious content. The document's structure, with minimal text and a focus on external links, supports the conclusion that it is designed to exploit user interaction with these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 69 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://pcetravel.com/files/file/garigadijide.pdf In PDF document text
    • https://capecoralliving.com/media/file/dodefozokum.pdfIn PDF document text
    • https://bindazzled.com.au/wp-content/plugins/super-forms/uploads/php/files/8288f17771ff32808d4dbb87a0a57c08/17341273268.pdfIn PDF document text
    • http://mayinluatudong.com/uploads/userfiles/file/sogekol.pdfIn PDF document text
    • https://nhaban24h.com.vn/wp-content/plugins/super-forms/uploads/php/files/hctfbb7basfil5enisstic7kat/5848791657.pdfIn PDF document text
    • http://fazekaskozpont.hu/images/upload/file/64578147245.pdfIn PDF document text
    • https://peoplesmodelinternational.com/ckfinder/userfiles/files/nafolaxapawilawuxenokog.pdfIn PDF document text
    • http://cbstav.cz/file/koziwuredile.pdfIn PDF document text
    • http://sonsuadogo.org/Images_upload/files/92022136838.pdfIn PDF document text
    • http://xn--939a66v0zjo3bcvdmrp.com/data/ckfinder/files/82076218536.pdfIn PDF document text
    • https://thepetrichortouch.com/wp-content/plugins/super-forms/uploads/php/files/3uddhiberohbpd8mghtebuejuf/69721553262.pdfIn PDF document text
    • http://startent.ru/SITE/files/editor/file/70860854566.pdfIn PDF document text
    • http://shepardinteriordesign.com/rw/upload/file/xenivoxasatige.pdfIn PDF document text
    • http://electriccityusa.com/images/fck_uploads/file/17529512401.pdfIn PDF document text
    • http://geredekombiservisi.com/userfiles/file/62632347379.pdfIn PDF document text
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614980da66cdb.pdfIn PDF document text
    • http://kxqcgs.net/filespath/files/20210901075932.pdfIn PDF document text
    • http://wmsone.com/eimages/file/4561613040.pdfIn PDF document text
    • http://otestmanager.org/club/data/userfiles/file/20210923021237.pdfIn PDF document text
    • http://innova-perila.ru/upload/files/pakokividonadexodom.pdfIn PDF document text
    • http://kidsjeodo.com/images/files/vewaludugepomalasiwinage.pdfIn PDF document text
    • http://littlepearlspublishing.in/data/eimages/file/85995229938.pdfIn PDF document text
    • https://jgranit.pl/userfiles/file/zasox.pdfIn PDF document text
    • http://tauroconsulting.pl/userfiles/file/bawitagagezu.pdfIn PDF document text
    • http://paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16133b5a480bf0---61601514996.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=watch+quiet+place+2+full+movie+free+onlinePDF 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_off0000b350.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB350 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000cb62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB62 14108 bytes
SHA-256: e81fe658fd3029d0ef4972f2d88f2fd325cbd1899d950afc777e68e95cacae51
font_02_sfnt_off0000ee83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE83 11004 bytes
SHA-256: 733febb8f080e5202efbab67472e5e416dc535b2862259c1f3fd76ecf44cae6a

Open this report in the interactive analyzer, or submit your own file for analysis.