Malicious PDF — malware analysis report

Static analysis result for SHA-256 292cd72483ff6537…

MALICIOUS

PDF

86.5 KB Created: 2021-09-03 21:52:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: b6035d56126d64e5c077483170c77731 SHA-1: 34346eca5d9ecdd3ed2499ec0fc0a026aaf3ab4c SHA-256: 292cd72483ff6537fd72928057836b080f535e09a4ab0a8e6f3b156fc72c7e19
156 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to various domains, many of which are hosted on compromised WordPress sites or disposable hosting, indicating a link farm designed to manipulate search engine results or phish users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 6

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://ietc-oman.com/userfiles/files/nasanut.pdf
    • https://maugli24.ru/wp-content/plugins/super-forms/uploads/php/files/0b0269398b34449d74096e0352e2b565/kimafozakedikowad.pdf
    • https://benqmusicworkshop.com/fupload/file/86996531351.pdf
    • http://ipublicity.cz/data/file/fedavesosudi.pdf
    • http://aranykoronakft.hu/userfiles/file/90879150433.pdf
    • http://opuspoint.com/ckfinder/userfiles/files/guridetofot.pdf
    • http://nemdanangpho.com/uploads/2021-07-28/images/files/69570126775.pdf
    • http://scissortailfarms.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cd845f9c191---wemenorafotizewolemob.pdf
    • https://djhelaly.com/wp-content/plugins/super-forms/uploads/php/files/1010e739f56b1e8712412b3bb3ea290b/7128388985.pdf
    • http://kortennis.co.kr/B/ck/ckfinder/userfiles/files/falulatudul.pdf
    • http://traktorpulling.de/ablage/userfiles/files/gixixomaremopesolofogo.pdf
    • https://lsp.od.ua/wp-content/plugins/super-forms/uploads/php/files/q15elehi9fh4o6dgaa62nji485/jenorepofiti.pdf
    • http://chongthamnguoc.vn/img/files/20124457731.pdf
    • http://coumert.com/images/file/degem.pdf
    • https://neoville.ru/wp-content/plugins/super-forms/uploads/php/files/a089e10fd992f38bca2153392aa02b6a/18467244428.pdf
    • https://agilitynd.com/wp-content/plugins/super-forms/uploads/php/files/5c5b621ced137990bdbdcafd30cba3b6/33531075864.pdf
    • https://facades-et-traditions.com/actualites/file/80118569318.pdf
    • http://www.telsercom.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0006fb7f7c---pagutitoxiva.pdf
    • http://huiking.cn/uploads/file/180225344686.pdf
    • http://nickels.design/ckfinder/userfiles/files/97807084655.pdf
    • https://securitydm.rs/slicice/file/lewibomobofuxetudunajet.pdf
    • http://english-island.pl/wp-content/plugins/super-forms/uploads/php/files/3m2ono8i0p77lmrg8p2281t417/36049765680.pdf
    • https://www.aironface.com/wp-content/plugins/super-forms/uploads/php/files/72cd0652240a43e337982366213fdab8/11457784660.pdf
    • http://cuacuonnhaxuongbinhduong.com/upload/files/fufur.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=the+power+of+speaking+in+tongues+pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb94.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xEB94 16792 bytes
font_01_sfnt_off000103a6.bin
a2aa4a77c893013a71082ddd69171d5e469fb530159a870e60ce6dad6d9d2540
pdf-font-stream PDF embedded font (sfnt) at offset 0x103A6 18172 bytes
font_02_sfnt_off00013299.bin
dda35be640daf65bc9026e525c560c752b20c80783621c6c6945400f39c57c17
pdf-font-stream PDF embedded font (sfnt) at offset 0x13299 10972 bytes