Malicious PDF — malware analysis report

Static analysis result for SHA-256 e269ef9494e7592d…

MALICIOUS

PDF

80.4 KB Created: 2021-09-10 17:12:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 12225712f29830980ad79521158df4e3 SHA-1: 00cf34f1c3d30c22e95ff0008d85ee0f411214f5 SHA-256: e269ef9494e7592d3c25168487969c64a02f9e0942f153abf79a0bee71c2f6e0
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, directing users to multiple compromised or disposable hosting sites. The embedded URLs, such as http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135b487bc3f3---48542528079.pdf, are likely intended to host further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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 http://360global.ca/userfiles/file/lixoduponuso.pdf
    • http://ulleungroadtour.com/FileData/ckfinder/files/20210901_E57042B9B13C004B.pdf
    • http://chonburi33.com/userfiles/file/gelasugulijigux.pdf
    • https://aordonez.com/images/contenidos/files/poziliw.pdf
    • http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/161347b5e46255---romol.pdf
    • http://luchetti.it/userfiles/files/nopumufamobuwevixin.pdf
    • http://psn-monolit.ru/img_file/files/josurevekopisiro.pdf
    • http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135b487bc3f3---48542528079.pdf
    • http://dakdekkersindex.nl/images/uploads/91065283940.pdf
    • https://dolmalatrek.com/userfiles/file/82197334552.pdf
    • https://projetovm.com/uploads/files/dosipiboru.pdf
    • http://tuzy.pl/Upload/file/mexomumusabakaxi.pdf
    • http://johndanton.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/3308309403.pdf
    • http://agt.es/files/galeria2/files/5981120701.pdf
    • http://hotel-ambassador-nice.com/upload/files/gejanowulufewilajonu.pdf
    • https://dhrc.in/userfiles/file/gezemowoxakowamebubopeb.pdf
    • http://okeefesreef.com/ckfinder/userfiles/files/49758540952.pdf
    • http://pspectr.ru/userfiles/file/bugisuninenizawilodutuzi.pdf
    • https://chennothinterios.com/uploads/file/fulosimuditedozapudejev.pdf
    • https://goldengrowers.com/wp-content/plugins/super-forms/uploads/php/files/dfe712a5a8296f103b036cf079d470c9/kenuladawidamisibojo.pdf
    • https://ajur.rest/uploads/userfiles/file/91625627864.pdf
    • http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/1612f3e2cd2236---likosonale.pdf
    • http://fc-junajted.com/upload/datoteke/24193132116.pdf
    • http://kmconlinecme.com/userfiles/file/lupujejoporofalarijesawo.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=lulubox+app+free+fire
    • 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_off0000d95f.bin
dfccf4711c1d1cfa0778a320a1314e77ddd50455c46812b6de6967f698f1ea43
pdf-font-stream PDF embedded font (sfnt) at offset 0xD95F 10280 bytes
font_01_sfnt_off0000f061.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xF061 16792 bytes
font_02_sfnt_off00010873.bin
6c4fa6a3e785f621b6065d364f5f26b4f59db6bce30ef219358e8aab5ec249c9
pdf-font-stream PDF embedded font (sfnt) at offset 0x10873 17116 bytes