Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7a9e652acddcf0f…

MALICIOUS

PDF

79.1 KB Created: 2021-03-12 02:53:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 9217ff9ebc20bea19dd7ff844a6081a6 SHA-1: d9c588be8a31a4fe984aa801eaef5813352984d2 SHA-256: a7a9e652acddcf0f3e6cb61b2587bcd76c64e88575b20b1fe5e5f5ce4ddf6f04
192 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains heuristics indicating it is a malicious redirector, specifically designed for phishing. It links to a URL that appears to be an SEO redirector, likely intended to lure victims with a seemingly relevant topic ('acute calculous cholecystitis pdf'). The ClamAV detection further confirms its malicious nature as a phishing trojan. No scripts were extracted, but the primary attack vector is the embedded malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8211

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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=acute+calculous+cholecystitis+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4446398/normal_60122019e3f5e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468831/normal_5fe74cadc31bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371787/normal_60465358deaed.pdfIn PDF document text
    • https://jifilebipik.weebly.com/uploads/1/3/4/3/134375607/nalodanejil-nefotofatojo.pdfIn PDF document text
    • http://janafan.scienceontheweb.net/5745011971.pdfIn PDF document text
    • https://kaledawuvilef.weebly.com/uploads/1/3/4/7/134727412/2d655f58.pdfIn PDF document text
    • http://mujudesuxiropa.sportsontheweb.net/wesexejowixuzu.pdfIn PDF document text
    • https://dujemezore.weebly.com/uploads/1/3/1/3/131381607/8554086.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377414/normal_5ffe44a222480.pdfIn PDF document text
    • http://xelibirujegid.mywebcommunity.org/tutorial_dreamweaver_8_bahasa_indonesia.pdfIn PDF document text
    • https://narofuputukate.weebly.com/uploads/1/3/4/5/134585455/xonab-dufomikeguwara.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/tutasujal/continents_map_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/vibuvomomuv/waxezegagunat.pdfIn PDF document text
    • http://xovolefewawex.atwebpages.com/happy_birthday_ukulele_tab.pdfIn PDF document text
    • http://gumusimigogasuz.onlinewebshop.net/lumawofenil.pdfIn PDF document text
    • https://s3.amazonaws.com/vogubivajavofu/somofodegisotexifiloxe.pdfIn PDF document text
    • https://s3.amazonaws.com/perurulexi/wills_eye_locations_in_nj.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011fa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FA9 5236 bytes
SHA-256: 5e28b6704018d23e2b7c6504ce3b419ece0a8d2b6fc184e370499dbb62e4a7d5

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