Malicious PDF — malware analysis report

Static analysis result for SHA-256 296fb6916ae8b380…

MALICIOUS

PDF

68.4 KB Created: 2021-02-23 08:48:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 4402efee69a319bbdf428c7656267447 SHA-1: 8d4fb05920243e04bedf47258b0fab4f9bc77cde SHA-256: 296fb6916ae8b380f8aab17554572cb4b9480374ffb47e0129728a80fdde8f70
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://yafferge.ru/wb?keyword=sig%20p229%20nightmare In PDF document text
    • https://static.s123-cdn-static.com/uploads/4370768/normal_5fe190b7d02ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486206/normal_5fe9f875c829c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500679/normal_602c84b5ab5f5.pdfIn PDF document text
    • https://cdn.sqhk.co/dizirajeb/pigq5xU/aaron_rodgers_college_team.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467038/normal_60274a5daf938.pdfIn PDF document text
    • https://cdn.sqhk.co/filodomazora/iggghjd/road_riot_mod_apk_unlimited_money_and_gems.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373261/normal_6029870607295.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490116/normal_601b42f022ff2.pdfIn PDF document text
    • https://cdn.sqhk.co/wovupeni/jjhiKic/free_bitcoin_earn_free_coin_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/wakivugex/AgcDtjc/3273552256.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bavutikoguvumit.rf.gd/trx_chest_workout_youtube.pdfIn PDF document text
    • https://s3.amazonaws.com/kizugokofo/68233358395.pdfIn PDF document text
    • https://s3.amazonaws.com/zarusegibitumet/tovalu.pdfIn PDF document text
    • http://judejelalub.rf.gd/mini_split_heat_pump_consumer_reports.pdfIn PDF document text
    • http://sobegomogi.rf.gd/belexafegiwodunofod.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_off0000cfb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFB6 5416 bytes
SHA-256: 61ad7ea95c092b4e5bf82b4af2c5c8f440415eb24948a9a5ecf18270685d2fce
font_01_sfnt_off0000e1fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1FA 10312 bytes
SHA-256: 657cab09fb7ff8cb97ede0c3d773f64091c032a02244b911a7afe650c9dc2a77