Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee5968650f72ac3d…

MALICIOUS

PDF

62.0 KB Created: 2021-09-20 08:49:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: cbb70854e371e7f763d115b81584211d SHA-1: 93c95c20db05b8423b885fa212e9651b3a61238d SHA-256: ee5968650f72ac3dc0faae9bd99f185f93b657cd470b05934a2fae2e5a88eda3
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, identified as a link farm on disposable hosting, suggesting a phishing or malware distribution attempt. The ClamAV detection and ML classifier further indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious activity, likely leading to a phishing site or a download of a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6686

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://broadgatecapital.com/userfiles/file/27715690418.pdf In PDF document text
    • http://www.puhito.hu/uploads/53396239774.pdfIn PDF document text
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/68tljdvc95p3b6vt7ts4rc3310/tononirumujavawipe.pdfIn PDF document text
    • https://silky.ae/images/bulk_images/files/gafenofolaxuranubota.pdfIn PDF document text
    • http://azbuka-d.ru/ckfinder/userfiles/files/64664820305.pdfIn PDF document text
    • http://baheth24cars.com/ckfinder/userfiles/files/33391321135.pdfIn PDF document text
    • http://celcg.pl/uploaded/file/kenewawopu.pdfIn PDF document text
    • http://yummyschool.com/_UploadFile/Images/file/35472068237.pdfIn PDF document text
    • http://archgeo-leszno.pl/uploads/userfiles/files/36436096395.pdfIn PDF document text
    • http://kesherisrael.com/uploadEditor/files/gagibizid.pdfIn PDF document text
    • http://martonelektro.hu/files/file/44778358145.pdfIn PDF document text
    • http://cjcounsel.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/56782507526.pdfIn PDF document text
    • http://praxis-greve-polley.de/web/editor/files/36656794250.pdfIn PDF document text
    • https://movie2book.com/userfiles/file/xuzovulisubatiwer.pdfIn PDF document text
    • http://nomayaku.com/userfiles/file/43098455462.pdfIn PDF document text
    • http://www.cavice.fi/tiedostot/files/merigolixolanutamexefiko.pdfIn PDF document text
    • http://artgraf24.pl/userfiles/file/xelexofinalef.pdfIn PDF document text
    • http://24cvety.ru/upload/files/81470295583.pdfIn PDF document text
    • http://powercleanperu.com/cms_powerclean_2015/sgi_userfiles/userfiles/files/fepuwov.pdfIn PDF document text
    • http://zsmnowakowski.pl/userfiles/file/56394074819.pdfIn PDF document text
    • http://www.thaiboat.net/image/upload/File/kupade.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=how+to+cinema+hd+on+firestickPDF link annotation
    • https://lapdonline.org/file/lonuj.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c81a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC81A 10864 bytes
SHA-256: 2e66360c69b43a37684dc40d45c69cb380c4a8d9226d44c690e90d711c2c70e3
font_01_sfnt_off0000e108.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE108 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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