Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1289f26f160e66c…

MALICIOUS

PDF

81.0 KB Created: 2021-09-13 11:10:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: f69a5d16544d8c11eedff8946ebe1045 SHA-1: 685e61da2a27bdb0bba94fb2231c507c51e4a2d4 SHA-256: f1289f26f160e66ce2faca414a432a5025cf806169d2d38c559256944163f44a
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://sino-web.net/filespath/files/20210907212504.pdf In PDF document text
    • http://recit-de-vie.fr/userfiles/file/kafudodopemoko.pdfIn PDF document text
    • https://groupunsur1.com/contents/files/40359048449.pdfIn PDF document text
    • http://veitali.com/upload/files/7801839337.pdfIn PDF document text
    • http://cabinet-blin.fr/ressource/site-image/files/fawaxitepawivawixurodiwux.pdfIn PDF document text
    • https://angem.fr/userfiles/file/kuxakewodanopinazetuje.pdfIn PDF document text
    • http://tecresconsolidamentorestauro.it/fck_data/file/busizatijetijek.pdfIn PDF document text
    • http://creativecoms.net/userfiles/file/tujazadijeraxegiturosoxos.pdfIn PDF document text
    • http://gs-metals.com/filespath/files/20210911093755.pdfIn PDF document text
    • http://www.zav-mito.si/wp-content/plugins/formcraft/file-upload/server/content/files/1613ac71612d4c---19409096221.pdfIn PDF document text
    • https://alshaabcoop.com/userfiles/file/sevugapuzepewuged.pdfIn PDF document text
    • http://www.derbysignandgraphics.com/uploads/file/77594592340.pdfIn PDF document text
    • https://safecampus.in/cmsCart/upload/file/lugufexosarakix.pdfIn PDF document text
    • http://maudchristan.nl/ckfinder/userfiles/files/11379266935.pdfIn PDF document text
    • http://allefrgycg.news-read.com/upload/files/44483249690.pdfIn PDF document text
    • https://mysmartedu.com/uploadimages/files/bagoruvikizu.pdfIn PDF document text
    • https://alaqart.atelierleuthold.ch/userfiles/files/bigaponetanizosiresubodo.pdfIn PDF document text
    • http://xn--80aafmoni2biho.xn--p1ai/admin/ckfinder/userfiles/files/xopopenu.pdfIn PDF document text
    • http://inggeo.eu/userfiles/files/29184288020.pdfIn PDF document text
    • https://bouveau-consulting.com/userfiles/file/supofi.pdfIn PDF document text
    • http://szpk.hu/_user/file/48344614168.pdfIn PDF document text
    • http://zhizhencn.com/filespath/files/20210903074922.pdfIn PDF document text
    • http://bienbao.org/uploads/files/17219668535.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=fangirl+watch+onlinePDF 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_off0000d8c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8C6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f0dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0DD 10404 bytes
SHA-256: 63d100b68a04564a540f5b789bdaa8202fc1d863b0521a6079770a46833f0816
font_02_sfnt_off00010864.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10864 17844 bytes
SHA-256: 4015f816acd1f5631f197e0df26e947b0fa66167e61cfa502bf9b36030521f5d

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