Malicious PDF — malware analysis report

Static analysis result for SHA-256 9018a46e9e0d9a00…

MALICIOUS

PDF

72.6 KB Created: 2021-09-12 12:59:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: c3a08f8cd282513885c53772c531347a SHA-1: 5607f9a4e8289be09d4f094755682a11351d4da8 SHA-256: 9018a46e9e0d9a0040018bd2f7c1c17a3fc5fa3b21850ec595685daf01fa1615
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which are part of a link farm designed to redirect users to potentially malicious content, as indicated by the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic. The primary URL suggests a lure related to game downloads, which is a common tactic for phishing or malware distribution. ClamAV detection and ML classification strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://huntic.ru/uplcv?utm_term=download+god+of+war+ascension+for+ppsspp PDF link annotation
    • http://nhuaduongnhapkhauaz.info/upload/files/sulijenemekevikulesav.pdfIn PDF document text
    • http://spakimthi.com/upload/files/47497094715.pdfIn PDF document text
    • http://1day2night.com/UserFiles/file/jifugojo.pdfIn PDF document text
    • http://tootingtaxi.com/survey/userfiles/files/vovali.pdfIn PDF document text
    • https://holocaustresearch.pl/nowy/photo/file/293054582.pdfIn PDF document text
    • http://biplano.eu/userfiles/files/29069507373.pdfIn PDF document text
    • http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b4f94c4851---55970900947.pdfIn PDF document text
    • http://ahlhy.com/uploads/file/061753492101.pdfIn PDF document text
    • http://opuspointpartners.com/ckfinder/userfiles/files/zorugajugumejo.pdfIn PDF document text
    • http://teraval.cz/res/file/63296650519.pdfIn PDF document text
    • http://mayepnuocmia.vn/data/ckfinder/files/sonogijoxesunimige.pdfIn PDF document text
    • https://cosmopolitanhotelbg.lastrada.bg/uploads/wysiwyg/files/64038445687.pdfIn PDF document text
    • https://www.theknowledgeonline.com/files/lib/ckfinder/userfiles/files/90693659186.pdfIn PDF document text
    • http://baaningdoi.com/file_media/file_image/file/76737258736.pdfIn PDF document text
    • https://www.rougeindigo.com/ckfinder/userfiles/files/92711731249.pdfIn PDF document text
    • http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/161307317a7dfe---11605207574.pdfIn PDF document text
    • https://benmoonpharma.com/userfiles/file/29763658965.pdfIn PDF document text
    • http://xn--82ca1bkibi6eufn5bh1b7i3e.com/UserFiles/File/20088418463.pdfIn PDF document text
    • https://wonwon.taipei/photo/file/mazirurulen.pdfIn PDF document text
    • http://plechotice.sk/tmp/file/68426884627.pdfIn PDF document text
    • http://artediapharma.com/upload/files/togad.pdfIn PDF document text
    • http://kxqcgs.net/filespath/files/20210905060018.pdfIn PDF document text
    • https://samarthanamparisara.org/apadmin/uploads/userfiles/files/gaporibila.pdfIn PDF document text
    • http://ls12368.com/userfiles/file/fegatugisigelagizerovesej.pdfIn PDF document text
    • https://prokoncept.hu/admin/blogfck/image/file/38358100267.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_off0000b5ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB5FF 10784 bytes
SHA-256: 6544571829aacec0d24e52e1b5143ec44570826142cb730f90b4c1e3190fe655
font_01_sfnt_off0000cec7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEC7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000e6d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6D9 17788 bytes
SHA-256: 634102f727d24442bb390db794bbfde52c0983c11d863d10e24ea66537a21049

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