Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a51ca9f941ba729…

MALICIOUS

PDF

68.9 KB Created: 2021-01-25 07:55:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 8a66ace40147a6893329f01310f71c7d SHA-1: 840650fecc3c343025c53755bbbd8fd133036793 SHA-256: 9a51ca9f941ba72981cfeda7e38e1d72e133d2439dc2f9d68d0ff37a00d568ba
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/wb?keyword=turbo%20dismount%202%20gameflare In PDF document text
    • https://cdn.sqhk.co/fipexuwebo/ibhgevv/vorurujedosevozanoki.pdfIn PDF document text
    • http://evilcheats.fun/pajatidd0p3s.pdfIn PDF document text
    • http://kayikciakademi.com/mitaniwibud7ins2.pdfIn PDF document text
    • https://cdn.sqhk.co/jesisuvov/jbm9uR8/vumujinegadi.pdfIn PDF document text
    • http://lnstagram-blue-ticks.com/85220698553rcx0t.pdfIn PDF document text
    • http://cmb-accueil.com/10228614075zc411.pdfIn PDF document text
    • http://fuxofexafot.iblogger.org/pibuxikununifobar.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/firigugixujotov/devebetitujulupabibedi.pdfIn PDF document text
    • https://s3.amazonaws.com/nolarifaforuxop/burnout_3_takedown_ps2.pdfIn PDF document text
    • https://s3.amazonaws.com/fejififimaketo/midas_touch_song.pdfIn PDF document text
    • https://s3.amazonaws.com/vesubodufisi/68220636657.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxomigo/29742021450.pdfIn PDF document text
    • http://binuxusegewake.epizy.com/sabosofugetunu.pdfIn PDF document text
    • https://s3.amazonaws.com/somisilegex/31610544158.pdfIn PDF document text
    • https://s3.amazonaws.com/pegek/20056117160.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_off0000cecd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCECD 5448 bytes
SHA-256: ee766b01dcf703bd69c92f2964e98e8ef604d06633dbb1594925dfeadce5ed67
font_01_sfnt_off0000e13c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE13C 11548 bytes
SHA-256: a9fd3ed11978137ff34ab0fcc999c06d1a25a387c237af2381b6425b4bc5bd80