Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcf9e7a0f8544236…

MALICIOUS

PDF

57.2 KB Created: 2021-02-25 23:45:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 688475bebf813a115afb0bf907c19294 SHA-1: bd4879fcc1f45fbe37b1701ca62d6ada104851e5 SHA-256: fcf9e7a0f854423676a879b7b8cba6fc38cf206eb8409be7ca477500519cdf46
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_UTM_REDIRECTOR_LINK heuristics. The document body, though heavily obfuscated, appears to be a lure related to scanning documents, which is a common tactic for phishing or malware delivery. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8343

Heuristics 3

  • 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.
  • 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/award?keyword=how+to+scan+double+sided+documents+on+hp+officejet+4630 In PDF document text
    • http://prolac.ru/449877478579feli.pdfIn PDF document text
    • https://cdn.sqhk.co/fezusife/ifGmpjg/zombie_killers_elephant_s_graveyard_cda.pdfIn PDF document text
    • http://sevagawos.getenjoyment.net/tazukumumerezezirafazote.pdfIn PDF document text
    • http://lighttravel-ng.com/respiracion_aerobia_y_anaerobia_cual_es_mas_eficienter3z3v.pdfIn PDF document text
    • https://cdn.sqhk.co/tefozakozup/fFIOgWY/tipezivafamomejotiji.pdfIn PDF document text
    • https://cdn.sqhk.co/jilebodetifa/SheYSig/thaad_missile_defense_system_in_israel.pdfIn PDF document text
    • http://silkhfig.bid/punch_boxing_3d_1._1_1_mod_apk0btgu.pdfIn PDF document text
    • https://cdn.sqhk.co/videbamez/Rrgfggx/first_strike_final_hour_free_download_ios.pdfIn PDF document text
    • http://richteam.site/chrome_for_windows_10_pc_freeefgqt.pdfIn PDF document text
    • https://s3.amazonaws.com/goveruduzewoxu/holt_algebra_1_chapter_5_test_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/kumasala/74154144262.pdfIn PDF document text
    • https://s3.amazonaws.com/jedadokuti/67898461083.pdfIn PDF document text

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