Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b514cd82e124316…

MALICIOUS

PDF

69.6 KB Created: 2021-03-08 11:29:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c83acd9d290c58ed39ed308cb8fa49a4 SHA-1: 8c2c0f115e8bded9da59bdb41ad85dc05b32bd6a SHA-256: 2b514cd82e124316af71c357c0ab406b6e3cec0c3ec525615ba646d2bcda7598
184 Risk Score

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/award?keyword=cereal+chemistry+pdf In PDF document text
    • http://sitizinudex.getenjoyment.net/bemuzanijizojagulilat.pdfIn PDF document text
    • https://cdn.sqhk.co/kinibemazoz/WgTLEja/gukena.pdfIn PDF document text
    • http://novazeku.mygamesonline.org/31981021648.pdfIn PDF document text
    • http://idem-peshkom.ru/nagamovupoo3g6a.pdfIn PDF document text
    • https://cdn.sqhk.co/begokaxawip/ghgzibW/84022037513.pdfIn PDF document text
    • https://bivedaniliged.weebly.com/uploads/1/3/4/7/134732971/7126052.pdfIn PDF document text
    • https://bakijunida.weebly.com/uploads/1/3/2/6/132695635/0191f0eadf3672.pdfIn PDF document text
    • https://cdn.sqhk.co/silutoge/icO3haH/temple_run_2_lost_jungle_game_play.pdfIn PDF document text
    • https://zukixuvaxetili.weebly.com/uploads/1/3/5/9/135988851/4023616.pdfIn PDF document text
    • https://cdn.sqhk.co/pevelefotuve/iekO2jf/talking_parrots_for_sale_uk.pdfIn PDF document text
    • http://rapoxarawiwalo.sportsontheweb.net/relomubivuliberopepi.pdfIn PDF document text
    • https://vogitoroxubas.weebly.com/uploads/1/3/0/7/130739894/7674114.pdfIn PDF document text
    • http://sweetygirl.club/21592587963g17cq.pdfIn PDF document text
    • http://loveantravel.xyz/27852088193nayzf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kugesiv.epizy.com/cutting_practice_sheets.pdfIn PDF document text
    • http://wilaroxu.atwebpages.com/one_thousand_and_one_nights_sparknotes.pdfIn PDF document text
    • http://puvusevakap.epizy.com/bezabizixim.pdfIn PDF document text
    • http://sijadogif.atwebpages.com/83699732685.pdfIn PDF document text
    • http://zorijefugixor.atwebpages.com/can_you_make_tapioca_pudding_with_buttermilk.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_off0000d646.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD646 5404 bytes
SHA-256: 0f66188a57dc930b1aee179956968efa56bb391fbbc753201000c9076eb79426
font_01_sfnt_off0000e880.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE880 9672 bytes
SHA-256: 8aaba024ddc7e3ee2f8ada86a005d7cb668640898ca36816be7144b150220422

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