Malicious PDF — malware analysis report

Static analysis result for SHA-256 79d3ea4feeebf50d…

MALICIOUS

PDF

120.7 KB Created: 2021-08-04 12:11:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 2591684277d3afba73f49269a46094f5 SHA-1: 6ea2cb0b6131df3c81d9a5fb18fd61e94226a9d7 SHA-256: 79d3ea4feeebf50d83212f445852621a10e155447b726dfcafe58c851e0eb008
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised CMS upload directories, suggesting a tactic to host malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8502

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/1606da29d23eb2---31919166994.pdf In PDF document text
    • http://monroehighwildcats.com/clients/40160/File/20439448916.pdfIn PDF document text
    • http://diclenakliyat.com/userfiles/file/rabirojimurunezev.pdfIn PDF document text
    • https://bandotrading.it/uploads/file/kegamerawemurifa.pdfIn PDF document text
    • https://teplitsyoptom.ru/wp-content/plugins/super-forms/uploads/php/files/0e916464807a6a7ed36d6b8be87e534f/nivoxanusunesoxufe.pdfIn PDF document text
    • https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bbe544dccda---xutujajuvatojenamo.pdfIn PDF document text
    • https://glasschneider.koeln/wp-content/plugins/super-forms/uploads/php/files/7qhfg9ekcenf793sckd7b5l96j/26148064181.pdfIn PDF document text
    • http://meble-tk.pl/userfiles/file/doluwelin.pdfIn PDF document text
    • https://webmenuplus.com/images/file/wijorurimak.pdfIn PDF document text
    • https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/161034ecb8482f---pitejububene.pdfIn PDF document text
    • https://nowbali.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/1609eb8e65cebb---85964972851.pdfIn PDF document text
    • https://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d05d8c6bdc3---12734640920.pdfIn PDF document text
    • http://atomiccm.com/userfiles/files/46187549604.pdfIn PDF document text
    • https://bykevin.com/wp-content/plugins/super-forms/uploads/php/files/e3fdc2a42b97c5d55b533603506831a2/38669771171.pdfIn PDF document text
    • http://smartmedicaleg.com/wp-content/plugins/formcraft/file-upload/server/content/files/161094f46460aa---60007559422.pdfIn PDF document text
    • https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ae48c483c8---sakitorewupux.pdfIn PDF document text
    • http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/rogc4g6512e1pu1tg04vhitvl9/54232639835.pdfIn PDF document text
    • http://adria-ex.com/images/blog//file/mafikukowoxelugafovitibu.pdfIn PDF document text
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/misa9f31aaut2mq3o359am42l7/levumizedejovazofanabevo.pdfIn PDF document text
    • http://czdashan.cn/uploadfile/file/2021052307041373499.pdfIn PDF document text
    • https://textosolutionslinguistiques.ca/upload/editor/file/37533307770.pdfIn PDF document text
    • https://motionslam.com/wp-content/plugins/super-forms/uploads/php/files/178bdc37c75ff18de773b5006d8ded86/85228531101.pdfIn PDF document text
    • https://shopexpert.com/app/webroot/files/userfiles/files/1197038406.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=rob%C3%B3tica+educativa+pr%C3%A1cticas+y+actividades+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_off0001a604.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A604 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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