Malicious PDF — malware analysis report

Static analysis result for SHA-256 15e660e1420720dc…

MALICIOUS

PDF

80.2 KB Created: 2021-09-09 01:05:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 0d484cb621e7c89da341e065021eac86 SHA-1: bfedeced9d0848f0656f30469ebd2509121de074 SHA-256: 15e660e1420720dc5497e7992b80ca84f02e131f371087a46d71a88ac82fad4a
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which are hosted on disposable domains and configured as a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or a scam. While no scripts were explicitly extracted, the PDF structure and URL patterns suggest it's designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://supermovi.com/userfiles/files/82722053751.pdf In PDF document text
    • https://cffcommunications.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/1613369a55a9a7---galironoxediwowupiwepo.pdfIn PDF document text
    • https://partnermind.cz/images/files/rululepikavusabozatisor.pdfIn PDF document text
    • http://phanphoiongnhuahoasen.vn/upload/files/29280148103.pdfIn PDF document text
    • http://cissi.it/userfiles/files/24684553038.pdfIn PDF document text
    • http://le383.com/uploads/files/44412565780.pdfIn PDF document text
    • https://phatgiaolongan.com/upload/ckupload/files/siviwenaparilola.pdfIn PDF document text
    • http://bogaarchitetti.it/userfiles/files/kilosufarakeb.pdfIn PDF document text
    • https://nacionalequipamentos.com/ckeditor/uploads/files/8772255574.pdfIn PDF document text
    • http://sevimticaret.net/userfiles/file/rukowiz.pdfIn PDF document text
    • http://alltechsro.cz/files/67766973055.pdfIn PDF document text
    • http://xn--c1aejbdnke.xn--p1ai/admin/ckfinder/userfiles/files/wubefavijepolaganiz.pdfIn PDF document text
    • https://my-natural-style.net/upload/files/danuwibagosuvube.pdfIn PDF document text
    • http://guss-ex.de/uploads/fck/file/bavidid.pdfIn PDF document text
    • http://desiaussies.com/ckeditor/uploads/files/37751296220.pdfIn PDF document text
    • https://music-group-store.com/upload/files/nebokepufirazijuruzadex.pdfIn PDF document text
    • https://jasmijnbloemengroen.nl/userfiles/file/wotuminozanelikezup.pdfIn PDF document text
    • http://uptownchantilly.com/uploads/files/90157699429.pdfIn PDF document text
    • http://files.ibiza-ferien.de/file/86013400054.pdfIn PDF document text
    • http://copingconversations.com/userfiles/file/47071551264.pdfIn PDF document text
    • http://musorcentrum.hu/files/article/file/zevenexobitareketif.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/364e6e1f2365de8682f99c6f83a9c641/nobefowuvilumedamufaweju.pdfIn PDF document text
    • http://anthonyjcincottalaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/dovanefajuv.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=free+ullu+web+series+appPDF 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_off0000d8a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8A8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f0ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0BA 16872 bytes
SHA-256: d4a7f71e1f9ea7445cb057703a22ab40a921736105c1ebdf3d04621078a0d0e2
font_02_sfnt_off00011c3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C3F 10224 bytes
SHA-256: be3a4b26255aaa3b372fb0876fd7e6e80fcc64e5c8c7c5890c1edeb19873acf9

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