Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a4b4155a77088f1…

MALICIOUS

PDF

70.7 KB Created: 2021-09-08 07:56:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 4cefc628d12d861a8c4e7259458072d1 SHA-1: 01540df44314a315289fe93a13ee9f09cd7782b8 SHA-256: 6a4b4155a77088f1568a45d5f31b9ff326fef47800e493c2bd3f2bbe865e1f0f
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as a Pdf.Phishing.Trojan by ClamAV, indicating malicious intent. It contains numerous links pointing to potentially compromised websites, suggesting a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4326

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://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1606ffbdca672e---11771462348.pdf
    • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/16087c0ed5e60f---vebekevikabasijitekasanej.pdf
    • http://klhl.com/userfiles/file/20114051485.pdf
    • https://afriqueitnews.com/wp-content/plugins/super-forms/uploads/php/files/edaca9eeda7933fc2bd78b73a0ccfef1/22831075648.pdf
    • http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608f9e2fb85ed---72062897260.pdf
    • http://lmyc.net/clients/875386/File/vewexiz.pdf
    • https://kaowei.tw/image/files/20210902_070121.pdf
    • http://yacpa.org/yacpafiles/file/fukox.pdf
    • http://railwaysrailroads.com/upload_files/files/bixarabakirewarejupu.pdf
    • https://www.superioreagle.com/wp-content/plugins/formcraft/file-upload/server/content/files/160849debc029e---lerobofepetevajowijipevoj.pdf
    • https://vinasimex.com/uploads/file/48967613053.pdf
    • https://www.lsv-wittlage.de/ckfinder/userfiles/files/wunomapuwa.pdf
    • http://pcserviszlin.cz/ckfinder/userfiles/files/71802503014.pdf
    • http://www.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5ec72626d0---mopiwodun.pdf
    • http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/1612f7226ca5b1---delapadafurefuvalebamuf.pdf
    • https://medok18.ru/wp-content/plugins/super-forms/uploads/php/files/29f594cbdbb142d986c5dd1496f05cbd/jubiwexesabokipivojetab.pdf
    • http://pneusmarene.it/images/file/99701287217.pdf
    • https://www.djluk.co.uk/wp-content/plugins/super-forms/uploads/php/files/tuj3cqrsq3o1i7hqtg9khid37m/tedite.pdf
    • https://electrabicycles.pl/app/webroot/uploads/file/16259147955331.pdf
    • http://dymenahealthcare.com//upload/fckeditor/file/30841116152.pdf
    • http://phuongdonggolf.vn/app/webroot/uploads/files/88662145867.pdf
    • https://sportli.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/16090d0e4c421e---gedoxubitugipif.pdf
    • https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/160ad933fca265---47303218059.pdf
    • https://designclarf.it/file/41326460513.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=us+gaap+pdf+2019
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9f5.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE9F5 16792 bytes
font_01_sfnt_off0001020c.bin
5f0d249d40a908019cbf199e9e49327e18efb3c5edc15762af830fbcd1454008		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1020C 10448 bytes

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