Malicious PDF — malware analysis report

Static analysis result for SHA-256 83429532f0b03eae…

MALICIOUS

PDF

72.8 KB Created: 2021-02-25 05:26:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 49f67489c63f4b8b3d9d41bb60e5bafd SHA-1: 8b27d02a75d1f553d70660120eaec63cf1f898f1 SHA-256: 83429532f0b03eae0d5219a3de8ff26e7d8c64a46d26659f1f69539cf3611f0b
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://maypoin.ru/wb?keyword=why%20is%20my%20furnace%20leaking%20water%20on%20the%20floor PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4389366/normal_5ff4cc8c2955e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467004/normal_5fc64872728bd.pdfIn PDF document text
    • http://dihtyar.online/gopulifesujadaxufox2lim4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369514/normal_5fd987d057eed.pdfIn PDF document text
    • http://nigufuf.iblogger.org/rearranging_linear_equations_y_mx_c_worksheet.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426279/normal_5fed10cd5260d.pdfIn PDF document text
    • https://jajaleregonu.weebly.com/uploads/1/3/4/2/134235513/givufudiw.pdfIn PDF document text
    • https://cdn.sqhk.co/wepunajexiju/bmgfjg4/promised_lands_1974.pdfIn PDF document text
    • https://cdn.sqhk.co/rirerujel/lgejiU1/madifolanujaxezesi.pdfIn PDF document text
    • https://buzoraxuv.weebly.com/uploads/1/3/4/3/134366179/7914350.pdfIn PDF document text
    • http://mosquito.codes/zebasosarxpnm9.pdfIn PDF document text
    • http://lasofetuxig.22web.org/tecnologa_de_las_centrales_termoelctricas_convencionales.pdfIn PDF document text
    • http://1xbets-regs.site/lds_2020_youth_theme_song_lyricsw78fe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zegaruso.rf.gd/58240492276.pdfIn PDF document text
    • http://xabenigirujufoz.epizy.com/63884464403.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e015.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE015 5568 bytes
SHA-256: 49daf7d12f944bb968f8e7922a891cb3a91c236c275f2b8255a1cf1b2900bb2a
font_01_sfnt_off0000f2f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2F9 10296 bytes
SHA-256: 07e5d118520290de8494a9e4026fb694bab99baabf1f09e9084e507e2d8772e2