Malicious PDF — malware analysis report

Static analysis result for SHA-256 89950ad017e72f1e…

MALICIOUS

PDF

71.1 KB Created: 2021-02-24 08:33:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: bec32049ec58c5f028967cba5a3e1915 SHA-1: c170135755892ca3c77e9d5cae4e69abe26ac49b SHA-256: 89950ad017e72f1effdef722649245ced8c519b8bc7d427148f30c3772b4cded
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/123?utm_term=pride+go+go+elite+scooter+parts In PDF document text
    • http://salonvarna.com/569086985387qsx6.pdfIn PDF document text
    • https://cdn.sqhk.co/fadejiweruw/ciddVji/school_of_dragons_dragon_egg_codes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460981/normal_601bca3f8a734.pdfIn PDF document text
    • https://cdn.sqhk.co/zuxosutuku/jehaidK/cake_topper_maker_online.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449009/normal_60011ac3ba1ae.pdfIn PDF document text
    • https://cdn.sqhk.co/luwonowuwig/jghhejc/32623500850.pdfIn PDF document text
    • http://qunit.space/1152773720mmrph.pdfIn PDF document text
    • http://theraisins.pro/peer_gynt_suite_no._1_op._46_filmgxzfd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421056/normal_600272b9dcb6d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377400/normal_6030794a6c809.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/zozuxukoxo/yamaha_mixer_mg124cx_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/kefefetafij/true_movie_hits_tv_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/lodazojamuva/civilization_6_early_game_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/tazopaju/rewafaliwuvugewuwimur.pdfIn PDF document text
    • https://s3.amazonaws.com/xufaxoferugod/17314966081.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_off0000da5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA5D 5244 bytes
SHA-256: 07a7cce3f42552a921042aaba2e9a309ba7fe7c44a010d9e1bba184493d909d3
font_01_sfnt_off0000ec43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC43 10452 bytes
SHA-256: ad691d9393ff1aaa82e3acc5756341fe109374e9130178089d59be01331f2cbf