Malicious PDF — malware analysis report

Static analysis result for SHA-256 59892e8ebdaf0c54…

MALICIOUS

PDF

71.7 KB Created: 2021-02-19 18:49:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 7d5148882ef78d59b8e585a29b0c1906 SHA-1: a95038d54d5a60d7b1e0d6a3e9f89d11de319912 SHA-256: 59892e8ebdaf0c541426fc74a66c66d71e0a9f340c4126571802a37043c15a60
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • 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://seumenha.ru/wix?keyword=party+patronage+apush PDF link annotation
    • http://cocobuka3.xyz/6375339846797q4c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495985/normal_602dfcf9bfe3c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414175/normal_5fd2ce676c758.pdfIn PDF document text
    • https://woremudof.weebly.com/uploads/1/3/4/7/134701645/8239969c605c22b.pdfIn PDF document text
    • http://esagafow.fun/cities_skylines_ps4_modsf5s56.pdfIn PDF document text
    • https://cdn.sqhk.co/sunidoxil/pihjcjh/bumupijofuvifug.pdfIn PDF document text
    • https://cdn.sqhk.co/regavebike/hg58ggP/45357548380.pdfIn PDF document text
    • http://eslife.pro/31488226767as0h9.pdfIn PDF document text
    • https://cdn.sqhk.co/jilebodetifa/fmhigdj/mozirak.pdfIn PDF document text
    • https://cdn.sqhk.co/fafujedajir/uhjSql8/strategic_planning_process_model.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382414/normal_5fdd7a94744ed.pdfIn PDF document text
    • https://cdn.sqhk.co/jepivitixiwo/2VhjhdU/41359327228.pdfIn PDF document text
    • https://cdn.sqhk.co/sipobufiw/iala42a/epson_print_ios_9.pdfIn PDF document text
    • https://cdn.sqhk.co/zebenane/hjQHCN1/virtual_dj_mixer_pro_apk_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/kisesawaropo/KghsP4d/communist_flag_in_boston.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000dd94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD94 5152 bytes
SHA-256: 295509e1a6b98d170406715925b624977db17c2c6b7c58ad0c4fa86c10b9a050
font_01_sfnt_off0000ef20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF20 10140 bytes
SHA-256: 804d19ab170a6a83269a2ad3c46c6a8dd8001424b5d7c4309ef744d65f585c52