Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed0963e0d92c05c3…

MALICIOUS

PDF

71.8 KB Created: 2021-09-28 07:45:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-02
MD5: 2becda44bc78b4a285a9cf630841e363 SHA-1: b7fd16c5515c7a6f68e84cf9e6a3cab1986d7210 SHA-256: ed0963e0d92c05c375958f0ac7ba0a4bdf2e440779573ff0888901d35916e88a
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 or trojan. It contains numerous embedded URLs, many pointing to disposable domains, and is identified as a link farm. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly suggests a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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 https://smidgel.ru/uplcv?utm_term=s20fe+sd+card+slot PDF link annotation
    • http://qhchemicalsfeed.com/upload/files/favomabamugum.pdfIn PDF document text
    • https://emenu.hu/editor_up/21338773808.pdfIn PDF document text
    • http://xenangheli.vn/public/files/bewezemotudidixepof.pdfIn PDF document text
    • http://patrickstaxi.fr/userfiles/file/77307424393.pdfIn PDF document text
    • http://hndgyl.com/v15/Upload/file/2021912336465000.pdfIn PDF document text
    • http://drivingschool-brno.eu/files/33393042324.pdfIn PDF document text
    • https://infotechsystemsonline.com/ital/www/img/file/88315881122.pdfIn PDF document text
    • http://hytechplus.com/userfiles/file/menefa.pdfIn PDF document text
    • https://xedulichhaiphong.vn/images/news/files/fixezezevejiwoxebutu.pdfIn PDF document text
    • https://vibangthuaphatlai.net/uploads/files/91528196094.pdfIn PDF document text
    • http://cuuhoatudong.com/upload/files/zonulikawugijivaf.pdfIn PDF document text
    • https://madspot.dk/ckfinder/userfiles/files/28873554644.pdfIn PDF document text
    • http://starinviter.com/ckimagefiles/96292384617.pdfIn PDF document text
    • https://altstudio.be/app/webroot/uploads/file/66510943680.pdfIn PDF document text
    • http://firesecurity.sk/userfiles/file/52315634186.pdfIn PDF document text
    • https://lexcochoralsoc.org/demo/lccs/beta/userfiles/files/58312219240.pdfIn PDF document text
    • https://intrastorg.com/userfiles/file/xugarewebejaxijesijis.pdfIn PDF document text
    • http://upakuika.com/img/file/63734672289.pdfIn PDF document text
    • http://reiki-roots.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1612feb8845d04---lepagubef.pdfIn PDF document text
    • http://yuqiaohome.com/uploads/files/202109062106024906.pdfIn PDF document text
    • http://opsir.eu/files/file/wiponopurogizejixaz.pdfIn PDF document text
    • https://keluargamimpi2.com/contents/files/52268935428.pdfIn PDF document text
    • https://alshamiltrading.com/alshamilfiles/file/19653859684.pdfIn PDF document text
    • https://a-pointpro.com/cms/ckfinder/userfiles/files/gojoloxatumerakotokobaxaj.pdfIn PDF document text
    • https://tes-sys.com/uploads/ckfinder/files/20210916/16317551376765.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b460.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB460 17424 bytes
SHA-256: 25acd7a4d9efdb98ba160adc3a946a3879580dc3cb3245df7666b6645fcb2d53
font_01_sfnt_off0000e14e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE14E 10588 bytes
SHA-256: 25d7ba1e19dcf6e827464eadcf7718bd8cbbc5cc0eabc86da8109f80d4db8d5c
font_02_sfnt_off0000f9b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9B4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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