Malicious PDF — malware analysis report

Static analysis result for SHA-256 062dceae8f95ae41…

MALICIOUS

PDF

98.5 KB Created: 2021-09-08 00:44:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 9f650be514bd6fdb029efed6feeb9043 SHA-1: 99e65e88a9f2ad45131368cba371a3a56351d834 SHA-256: 062dceae8f95ae4137011190d0b3b9e007ebafeb1debe726fc769044cb5d958e
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to compromised CMS upload directories, suggesting it's designed to lead users to malicious content or phishing sites. ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent. While no scripts were explicitly extracted, the PDF structure and link farm behavior are indicative of a phishing or malware distribution lure, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3126

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 http://tantex.org/tantex/tantexuserfiles/file/dosiperovibesonaropedo.pdf In PDF document text
    • https://mygamedaysports.com/wp-content/plugins/super-forms/uploads/php/files/0e6b53f8fb23f6aced54e5aa5338380c/venunoboj.pdfIn PDF document text
    • http://cabini.it/userfiles/files/44650238753.pdfIn PDF document text
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/geqao7v16jdoc6pghkvvudbku7/mobipilofuf.pdfIn PDF document text
    • https://stijsr.com/userfiles/file/pifaripefofifufidim.pdfIn PDF document text
    • http://nova-auto.com/upload/boledegikejujedumem.pdfIn PDF document text
    • https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3d25385141---fokuxisigukojulemi.pdfIn PDF document text
    • http://kommunikator.nu/demo/userfiles/file///nezekuzonemefinomaweletad.pdfIn PDF document text
    • http://ottotech.center/userfiles/file/66060006483.pdfIn PDF document text
    • https://aterhesseg.com/up_image/file/xujeninawupemefumedupagaf.pdfIn PDF document text
    • https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ab1a6d1a2d---fupokukakilewexavem.pdfIn PDF document text
    • https://massagetheory.ca/wp-content/plugins/super-forms/uploads/php/files/704c0283cc95fae297060e208a2178df/reguzavolasuxesu.pdfIn PDF document text
    • http://albino-pitti.com/pub_img/file/bexuvuzepuxibapagejaw.pdfIn PDF document text
    • https://www.skyline-recruiting.com/wp-content/plugins/super-forms/uploads/php/files/14c2ef6953919156d9700e6af7c8f083/xofoxudetonusemux.pdfIn PDF document text
    • https://toananhmedical.com/uploads/files/73180515533.pdfIn PDF document text
    • http://topcudental.com/img/userfiles/files/zubopuvubupu.pdfIn PDF document text
    • http://timebymtm.com/upload/files/panekeloripulenoz.pdfIn PDF document text
    • https://appchecar.com/ckfinder/userfiles/files/74029605388.pdfIn PDF document text
    • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/160e21b12cf3ec---66594723452.pdfIn PDF document text
    • https://autotrilogy.com/wp-content/plugins/super-forms/uploads/php/files/7e0028165e57054ec43937da34ba1403/5170070132.pdfIn PDF document text
    • http://nutranghongngoc.com/media/ftp/file/90097703889.pdfIn PDF document text
    • https://soechi.id/userfiles/file/sosajutaxazavubuteseweze.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=gravely+zero+turn+mower+repair+manualPDF link annotation
    • 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_off000126f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126F8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00013f0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F0F 10712 bytes
SHA-256: cf20c6035468b2feaab0f19b9241891ec3300fb71c86f58c841479e2bbcb665c
font_02_sfnt_off000157bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x157BF 21724 bytes
SHA-256: 7beb0e6aed84cab32bef847303cc9cb5675b0ce6ea06eecda0e774ff704e8447

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