Malicious PDF — malware analysis report

Static analysis result for SHA-256 96489129feb0c594…

MALICIOUS

PDF

58.1 KB Created: 2021-10-03 05:44:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: ab46403b320c3ec494bd040969080050 SHA-1: ecdaf1e4430ce5495631c7b802246f85edc1be63 SHA-256: 96489129feb0c5948a5b8dbcb204bd7e5975d8de26dd501b22e7cadf1723db9d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm pointing to multiple domains, many of which are hosted on compromised CMS upload storage or appear to be disposable. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the structure suggests it's designed to lure users to external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8155

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://asiapharma.la/files/files/69588482461.pdf In PDF document text
    • https://resortweeks.pro/userfiles/file/febokakida.pdfIn PDF document text
    • https://tekdalyapi.com/upload/ckfinder/files/timubed.pdfIn PDF document text
    • https://rajatotogroup4.com/contents/files/37985449539.pdfIn PDF document text
    • http://77owship.netsociality.com/upload/files/pulimosubotani.pdfIn PDF document text
    • https://foundationkuzmanov.com/files/77987713730.pdfIn PDF document text
    • http://ride-on-earth.com/images/blog/file/moxumidovibapevovafug.pdfIn PDF document text
    • http://everest-c.ru/ckfinder/userfiles/files/91473499472.pdfIn PDF document text
    • http://affectif.ro/data/Image/file/79784747660.pdfIn PDF document text
    • https://mimpiindahsatu.com/contents/files/37151249782.pdfIn PDF document text
    • https://www.chortho.co.uk/wp-content/plugins/super-forms/uploads/php/files/mak878sgnf9kg6rm6jfipbl6a4/gosutepo.pdfIn PDF document text
    • http://steakclubhn.com/campannas/file/lixepumetikareg.pdfIn PDF document text
    • https://kachhiproperties.com/wp-content/plugins/super-forms/uploads/php/files/4f18d44ad1d21ed799d6cc351a6f56a2/robudegonapiragoz.pdfIn PDF document text
    • http://aivieksteslaivas.lv/userfiles/file/filowe.pdfIn PDF document text
    • http://ilksolar.com/Images/Media/files/68412347594.pdfIn PDF document text
    • https://lotteppta.com/beta/assets/file/13229658716.pdfIn PDF document text
    • http://sabagdasarov.ru/upload/file/56698957571.pdfIn PDF document text
    • https://vernadoc.com/wp-content/plugins/super-forms/uploads/php/files/2520172d57c1c5a6566264db2b1dbece/milonafavivewuvexabez.pdfIn PDF document text
    • http://coytex.net/ckfinder/userfiles/files/28540364563.pdfIn PDF document text
    • https://gad-elhak.com/userfiles/file/80521251569.pdfIn PDF document text
    • http://keacg.com/upload/files/46245209773.pdfIn PDF document text
    • https://argekaucuk.com/nbg/upload/files/90243337757.pdfIn PDF document text
    • https://tortugafilms.ca/adminfiles/file/15039649150.pdfIn PDF document text
    • https://vettercycles.ch/userfiles/files/18836299995.pdfIn PDF document text
    • http://kiapelhrimov.cz/UserFiles/File/gizaderusujupexagenewe.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=filli+business+bayPDF link annotation
    • 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_off0000b367.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB367 15884 bytes
SHA-256: 5a2a00cda57280b57f89c6340777f955eecf78aa747788d0e681f739a76bc4c9

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