Malicious PDF — malware analysis report

Static analysis result for SHA-256 d89c0d940851b395…

MALICIOUS

PDF

83.7 KB Created: 2021-09-11 04:18:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: f955d64c4305dd4f689923d0690391f9 SHA-1: a08128e430977d944e493b467a76df617d477cba SHA-256: d89c0d940851b39529548e0f35a3a08bbb35185c133ec833afa4135f20bdb860
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to disposable domains, and is identified as a link farm. While no scripts were explicitly extracted, the presence of external URIs and the overall structure suggest an attempt to redirect users to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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
  • 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 http://ngnjl.com/userfiles/files/sugagiguli.pdf
    • https://ckfinder.pamlskovnik.cz/ckfinder/userfiles/files/viluxozunanulader.pdf
    • http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613862d4e19d4---99078839130.pdf
    • http://quatanggiabao.com/images/uploads/files/gokevikuwusiganusipefow.pdf
    • https://tasleemdubai.com/userfiles/files/88419682385.pdf
    • https://armour-technoz-ca.otzol.net/ckfinder/userfiles/files/29861367031.pdf
    • https://greenvalleykerala.com/ckfinder/userfiles/files/sifoxirukisonikebofole.pdf
    • https://autoprofi.ua/userfiles/file/11548296947.pdf
    • http://blackhorsesc.pl/userfiles/file/40218349398.pdf
    • http://greenhere.cn/upload/ckimg/files/202109080921473688.pdf
    • https://vozilasavozacem.rs/files/vizikiguzupofu.pdf
    • http://kavernoklub.com/campannas/file/93860508121.pdf
    • http://theflowermaker.com/uploads/File/sinagudejezituwipij.pdf
    • https://soudureornementalelauziere.com/upload/editor/file/gabotijal.pdf
    • http://longvu.vn/Images_upload/files/wewevabazeka.pdf
    • http://ahkjt.com/upfile/file/maridupapo.pdf
    • https://toyotaautobody.com/ckfinder/userfiles/files/88663794387.pdf
    • http://abwmarlboropike.com/uploads/files/71899539367.pdf
    • https://kamhosting.nl/ckfinder/userfiles/files/66136113001.pdf
    • https://partnermind.cz/images/files/sokapizabubemenofuba.pdf
    • https://kokomanis.com/contents/files/waromoriletogupom.pdf
    • https://huaku3c.tw/uploads/files/202109101824238423.pdf
    • https://samajsutra.com/userfiles/files/64196465760.pdf
    • https://turkeyinsurance.info/images/file/zepabapugepepi.pdf
    • https://assignmentmart.com/ckfinder/userfiles/files/fuwesebuvaramizozel.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=real+credit+card+numbers+that+work+2020
    • 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_off0000ddc9.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDDC9 16792 bytes
font_01_sfnt_off0000f5db.bin
667f8a833dc41209aa96226693ae76776fab5a1b8d84e055a697eaa1aca567be		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF5DB 18476 bytes
font_02_sfnt_off0001262e.bin
30163b50985e2e8293ce43316514e0dede2ab43c08ae3d3f0ef070aa98521552		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1262E 11340 bytes

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