Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9c1b1fc03703937…

MALICIOUS

PDF

205.6 KB Created: 2021-03-22 01:03:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d79b5a0acbd967ef9f33ee1d944e8f2a SHA-1: 3876f0f18ca090c4c4244b39d5b49962e6e4909d SHA-256: e9c1b1fc037039370bb91294ed23ff3e0a143d8c6a9db894b911e41236841a5a
192 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains heuristics indicating it links to malicious redirector infrastructure, specifically identified as a lure for free downloads. The ML classifier and ClamAV detection further support its malicious nature. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics suggest the document's primary function is to redirect the user to a malicious site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9008

Heuristics 4

  • 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.
  • 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/award?keyword=reactions+of+thiosemicarbazide+pdf In PDF document text
    • https://s3.amazonaws.com/fojaxexino/how_to_start_a_realistic_fiction_book.pdfIn PDF document text
    • http://interbankdigital.com/38190676003ojp9n.pdfIn PDF document text
    • https://s3.amazonaws.com/woxojuxafopuv/17536279718.pdfIn PDF document text
    • https://s3.amazonaws.com/sorogamat/kamejulabigokoxofutaw.pdfIn PDF document text
    • https://s3.amazonaws.com/juvuraguvutoxif/154012435.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422135/normal_5fc7627d2526d.pdfIn PDF document text
    • https://cdn.sqhk.co/tekuzorumuji/aYjagff/70937655284.pdfIn PDF document text
    • https://cdn.sqhk.co/senaveduwiz/e3vqihk/agrarian_reform_problems_in_the_philippines.pdfIn PDF document text
    • http://koreanluxe.com/lebidopakuzemegekixemeo43w3.pdfIn PDF document text
    • http://lorebip.22web.org/voicemail_to_text_android_verizon.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486971/normal_5fc7ebb80f3f3.pdfIn PDF document text
    • http://digosige.mywebcommunity.org/what_does_the_acronym_smart_stand_for_answers.com.pdfIn PDF document text
    • https://cdn.sqhk.co/neviragar/dChahd9/68395522518.pdfIn PDF document text
    • http://rasprodavaika.ru/bidigeduzatxdyhv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368740/normal_60539ac13eb7a.pdfIn PDF document text
    • http://ryursew.space/hd_wallpaper_love_birds_photosa5dj6.pdfIn PDF document text
    • https://s3.amazonaws.com/tosevud/26814919639.pdfIn PDF document text
    • https://cdn.sqhk.co/fugovigul/hdcMjjv/best_recharge_card_scanner_ntc_ncell_users.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nokejufesuw.atwebpages.com/speak_now_digital_booklet.pdfIn PDF document text
    • http://pozidijapepore.atwebpages.com/zetojuzikakojipab.pdfIn PDF document text
    • http://lawiferow.myartsonline.com/axis_bank_personal_loan_application_form.pdfIn PDF document text
    • http://gajovab.epizy.com/48256888676.pdfIn PDF document text
    • http://jufofokisib.epizy.com/going_postal_terry_pratchett_full_movie.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002f650.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F650 1656 bytes
SHA-256: e6a14c13802b1aec86fd0aba1956a792643f74689d83c943e960e56befef0f55
font_01_sfnt_off0002fe9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FE9E 5560 bytes
SHA-256: 7d5a7027a81396c73cadef0b820b0c6e5e6f348cc5c438b5ea135b51b2021499

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