Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f68e4448001b22e…

MALICIOUS

PDF

81.0 KB Created: 2021-09-13 00:42:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-25
MD5: b59d677c9799bf635140404759d3c780 SHA-1: 88274958d022491cd4a9d556cc34c85d028e14f4 SHA-256: 2f68e4448001b22e688427ca9e8d610bc5811a43395636805a24478b72e85ba7
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://cructi.ru/uplcv?utm_term=south+dubbed+movie+download PDF link annotation
    • http://hitecds.com/userfiles/file/xeberejugewamixegu.pdfIn PDF document text
    • http://domusanna.it/userfiles/files/98595484332.pdfIn PDF document text
    • http://strap.sk/uploads/file/88853274880.pdfIn PDF document text
    • https://postele-z-masivu.sk/ckfinder/userfiles/files/fedoxotexaverip.pdfIn PDF document text
    • http://patronusalapitvany.hu/public_html/upload/61635034536.pdfIn PDF document text
    • http://fteq.ru/files/file/78960327776.pdfIn PDF document text
    • https://eclearusa.com/images/file/xonesanunufikopaku.pdfIn PDF document text
    • http://weddingdove.tw/uploads/files/202109111749332565.pdfIn PDF document text
    • https://cristalensi.com/public/File/defaniteminusanegutob.pdfIn PDF document text
    • http://446888.top/userfiles/file/76778143948.pdfIn PDF document text
    • http://influences-vegetales.eu/assets/Image/files/dororevodonobiwajifuno.pdfIn PDF document text
    • http://autosklo.sk/pictures/file/45729929667.pdfIn PDF document text
    • http://pantanalmsnews.com.br/ckfinder/userfiles/files/mokakefabikov.pdfIn PDF document text
    • http://saringkarnwood.com/UserFiles/file/wositoj.pdfIn PDF document text
    • http://linker-apps.com/files/tuwuzetajej.pdfIn PDF document text
    • http://max-metal.pl/gfx/file/8475153375.pdfIn PDF document text
    • http://nessium.net/userfiles/file/nazulusosezoxujukogotevuz.pdfIn PDF document text
    • http://sireny.net/share/files/84702271341.pdfIn PDF document text
    • https://petpetmates.com/files/editor/file/xozupuselupatoxulope.pdfIn PDF document text
    • http://thuocnam.xyz/images/files/24845012090.pdfIn PDF document text
    • http://ipea.kr/userData/board/file/95053486823.pdfIn PDF document text
    • http://yaan121.com/uploads/files/202109080527232746.pdfIn PDF document text
    • http://globalone-mould.com/gbw/fckfiles/20210909012335.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d8f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8F9 17504 bytes
SHA-256: b5e7b1bd931ea08ebdcccb7234ecd4bd60ac320eccd723ec82b889f94fca316f
font_01_sfnt_off00010606.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10606 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011e1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E1D 10712 bytes
SHA-256: 0c8379f09b71ad40e89ae09052751d563344d4472356247bccc16dd478b78ddb

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