Malicious PDF — malware analysis report

Static analysis result for SHA-256 30449af427b7960e…

MALICIOUS

PDF

76.9 KB Created: 2021-03-25 14:12:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 2b6b48522e66ed9c921042a755ca1262 SHA-1: 1937e14b6ab16abbcc0c8a1a1736dbd232e43db6 SHA-256: 30449af427b7960ee306fb02c9d5d9f8c87d8ac134f176dc55b41828030efad1
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://gimoguvi.ru/wix?keyword=the+grove+coffee+bean PDF link annotation
    • https://kazowotamije.weebly.com/uploads/1/3/4/0/134012594/gubupo-xojivepoxugaw-pixevolelofedo.pdfIn PDF document text
    • http://nojekufa.22web.org/73663687927.pdfIn PDF document text
    • https://zibataluguxomi.weebly.com/uploads/1/3/1/3/131382491/daxaxesazosuvur_zepenilawu_jetef_biluw.pdfIn PDF document text
    • http://dekagexagupeje.iblogger.org/this_compilers_reportedly_composed_approach.pdfIn PDF document text
    • https://jurefuzosapob.weebly.com/uploads/1/3/4/9/134901670/varafaza_kosenedexelon.pdfIn PDF document text
    • https://nitonigizumori.weebly.com/uploads/1/3/0/7/130739712/bitutiko-kibax-mupovofawuda-kixisu.pdfIn PDF document text
    • https://cdn.sqhk.co/godanalumado/Bihhcjf/avenger_xtc_hardtop.pdfIn PDF document text
    • https://libepuve.weebly.com/uploads/1/3/1/4/131407284/gijoge_dekigunal_kumifitapeza_rolusodopu.pdfIn PDF document text
    • https://cdn.sqhk.co/jalotenabo/w1ggvwP/95197870409.pdfIn PDF document text
    • https://cdn.sqhk.co/bidubuwawi/VyZjgVD/pogromcy_duchow_playmobil.pdfIn PDF document text
    • https://cdn.sqhk.co/dosovejozeb/piiBidQ/best_bookmark_manager_tools.pdfIn PDF document text
    • https://nobexuliga.weebly.com/uploads/1/3/1/4/131405940/382974a9253.pdfIn PDF document text
    • https://fujuzelos.weebly.com/uploads/1/3/1/3/131380065/4607324.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tenubitifane.rf.gd/manual_de_administracion_de_empresas_gratis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce88b8a8-262c-4700-96dc-f9417f2e2b46/pirejeko.pdfIn PDF document text
    • http://lutumogeli.rf.gd/nofaxoboxuvobiwe.pdfIn PDF document text
    • http://katuribadelu.rf.gd/ruud_silhouette_filter_location.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71f7690d-7793-407e-b36a-9ddaf73384e3/lobotigiwatapijekaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7556aa31-2f9a-4a72-aba3-4afab0dd5797/muvoj.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://scripts.sil.org/OFLIn 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_off0000d738.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD738 5084 bytes
SHA-256: c919b34e305dcad41feecc82a1da7cbb1cf05ca28e92bbaaf2dc5210c0b631c1
font_01_sfnt_off0000e894.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE894 11520 bytes
SHA-256: 326cfc756882cf9689e2ebb7144094ff7d15a1d70e84da730bb39b1ddaba0ed0
font_02_sfnt_off00011030.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11030 16544 bytes
SHA-256: 4354bd37e85197a997b2f6c8c8698034d2711068b41d1b66819094364c364bcc