Malicious PDF — malware analysis report

Static analysis result for SHA-256 df5f3159a4d3d92b…

MALICIOUS

PDF

92.1 KB Created: 2021-09-12 03:08:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 64727b03e55cbfb0fe1950256405caf9 SHA-1: 1f4d4216c279ee606b0008a8f8a089f52b1c3c50 SHA-256: df5f3159a4d3d92bb111cbeef1caa7a8e90bb927123413941c1fa98bb6eb30f7
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised CMS upload storage or disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery. No scripts were extracted, but the structure and URL patterns are indicative of a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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://schokoladenbrunnen.de/idata/taputexaxusudodanelekelaw.pdf In PDF document text
    • https://www.temtechnologies.fr/ckfinder/userfiles/files/48486273237.pdfIn PDF document text
    • https://ewms.vn/wp-content/plugins/super-forms/uploads/php/files/9g982s2q85pnjh2hb6hoqv6ap6/danafuzugobe.pdfIn PDF document text
    • https://momsgardenfoods.com/ckfinder/userfiles/files/1550798757.pdfIn PDF document text
    • https://mimpishiodua.com/contents/files/84561438411.pdfIn PDF document text
    • http://studioesflores.pl/obrazy/file/74929360603.pdfIn PDF document text
    • http://vesimport.ru/userfiles/file/muvabevabix.pdfIn PDF document text
    • http://www.larucheapain.fr/ljk/file/14473853846.pdfIn PDF document text
    • http://tamtamphat.com/upload/files/zaniguwedonemokapenax.pdfIn PDF document text
    • https://daiichitravel.com/uploads/news_file/likiwi.pdfIn PDF document text
    • https://sodigital.it/wp-content/plugins/formcraft/file-upload/server/content/files/16131bed8c6e4b---xekebiporipusibila.pdfIn PDF document text
    • http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c0f14c4ae7---xigudufedoz.pdfIn PDF document text
    • http://roocenter.ru/upload/file/kudemozetuliso.pdfIn PDF document text
    • http://bulongvungtau.com/media/ftp/file/88988306110.pdfIn PDF document text
    • http://bagiez.de/userfiles/file/jajaxutamulitikenaduluki.pdfIn PDF document text
    • http://leadingedgecorporate.com/user_images/file/pezefexokuruli.pdfIn PDF document text
    • http://kroonzuivel.nl/ckfinder/userfiles/files/39149856583.pdfIn PDF document text
    • http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d2fa8756c9---jisinuf.pdfIn PDF document text
    • https://eijo.in/ckfinder/userfiles/files/54769053536.pdfIn PDF document text
    • http://togclick.com/media/userFckfiles/file/27488433961.pdfIn PDF document text
    • https://thepainter.asia/upload/files/25439571898.pdfIn PDF document text
    • https://bcbc3399.com/upload/files/87174111101.pdfIn PDF document text
    • http://www.telsercom.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134135338697---ropabujekogokewi.pdfIn PDF document text
    • http://aallergy.netlovestories.com/upload/files/53042726865.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=dhadak+movie+fullPDF link annotation
    • 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_off00010553.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10553 17860 bytes
SHA-256: 60f1a4b56014b825dc5ce7fceb71b8870aae94594b61ae21991f28a0a407ba82
font_01_sfnt_off00013337.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13337 10408 bytes
SHA-256: ba82095d68a4d3090b4159a313eb6312aeb87c3af4520425ca7864a183d4a3db
font_02_sfnt_off00014abd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14ABD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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