Malicious PDF — malware analysis report

Static analysis result for SHA-256 36d8d93058d24c9e…

MALICIOUS

PDF

70.6 KB Created: 2021-09-07 01:58:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: a0e2d0c0f80348bfb236bd0e64c70fcd SHA-1: 8339d11af0698f54124f15aac2f4b196a88322e0 SHA-256: 36d8d93058d24c9e138f7edee5173a8d822589761a45ce6259a77c9c7c5649ed
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed to lure users to potentially malicious destinations. The ClamAV detection and ML classifier further support its malicious nature, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6772

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://ahkjt.com/upfile/file/10692285017.pdf In PDF document text
    • https://ip-kamera-rendszer.hu/ckfinder/userfiles/files/36803061835.pdfIn PDF document text
    • https://www.businesswatchguardingservices.co.uk/wp-content/plugins/super-forms/uploads/php/files/eom7ded31j6jdfhpjcgc3teedo/tovolowefubuvugovo.pdfIn PDF document text
    • http://sireny.net/share/files/86869999568.pdfIn PDF document text
    • https://amalighting.com/wp-content/plugins/super-forms/uploads/php/files/19df3bf737513020948a926d731114f4/suvenule.pdfIn PDF document text
    • http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fd8e3cb4a0---73500832843.pdfIn PDF document text
    • http://assistance.uz/images/shared/file/69123661849.pdfIn PDF document text
    • http://www.tiande-global.com/ckfinder/userfiles/files/4966269787.pdfIn PDF document text
    • https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/1612649c70ee08---11544321523.pdfIn PDF document text
    • http://global-poseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac4a1085627---novigudabetuvirut.pdfIn PDF document text
    • http://beganijewellers.com/ckeditor/ckfinder/userfiles/files/71281409889.pdfIn PDF document text
    • http://xn--90afqerdlt1f.xn--p1ai/admin/ckfinder/userfiles/files/97082804221.pdfIn PDF document text
    • http://globalquestconsulting.com/userfiles/files/32644240788.pdfIn PDF document text
    • https://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/06652363e74bb7ab4f53b7335b0b931a/robil.pdfIn PDF document text
    • https://grnca.org/img/files/files/4515844740.pdfIn PDF document text
    • https://cms.blauraum.com/wp-content/plugins/super-forms/uploads/php/files/087a1bd8ee4d99d5d691a33e74ef66b1/xelukivenuzaliduguxetuvo.pdfIn PDF document text
    • https://angkortaxiservice.com/userfiles/file/46170471361.pdfIn PDF document text
    • https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/bf14112e316970114755c3ad1cbf1674/26913388782.pdfIn PDF document text
    • https://htchninc.com/d/files/10671206899.pdfIn PDF document text
    • http://short-story.ru/upload/file/gozebovu.pdfIn PDF document text
    • https://web-sila.ru/wp-content/plugins/super-forms/uploads/php/files/252c509d5e5e638ac65511ccf73b77e3/99419549105.pdfIn PDF document text
    • https://newshieldinsurance.com/demo/gsa/final/images/file/detixobixopuwowodewatusi.pdfIn PDF document text
    • http://lapmaymn.samdigroup.vn/app/webroot/upload/files/lupivumuwujowa.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=sbi+corporate+salary+package+pdfPDF 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_off0000ea36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA36 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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