Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee1ae94a7c7a6ce3…

MALICIOUS

PDF

72.3 KB Created: 2021-02-25 13:56:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 721089586f8e09a9bdf829d8d0791825 SHA-1: 37d28dc4bfc9a2bc80d1a0e1852504cd2a57631e SHA-256: ee1ae94a7c7a6ce3ad979b7d8fc39a1fd4dbf173908ebb3e3bc02b8bd885dc3d
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics and an ML classifier, indicating a high likelihood of malicious intent. It contains links to known malicious redirector infrastructure, specifically 'https://crophysi.ru/award?keyword=d%2526d+online+free+play', which is used to lure users with the promise of free content. The document body is heavily obfuscated, but the presence of redirector links strongly suggests a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://crophysi.ru/award?keyword=d%2526d+online+free+play In PDF document text
    • https://cdn.sqhk.co/rubalibuzodi/C7Ribjf/36185183474.pdfIn PDF document text
    • http://senteber.site/88820014241xvs7q.pdfIn PDF document text
    • https://cdn.sqhk.co/nuduniguwufo/giEhghf/veborugujeta.pdfIn PDF document text
    • https://cdn.sqhk.co/mikedeto/hqAFQ27/xanegiruludenite.pdfIn PDF document text
    • https://cdn.sqhk.co/xagaxubibiz/jbo9U66/origami_flower_rose.pdfIn PDF document text
    • https://cdn.sqhk.co/kagumuzom/VjgSiba/jizibujoxisijar.pdfIn PDF document text
    • https://cdn.sqhk.co/ruvonusebex/8fjghb2/28002085098.pdfIn PDF document text
    • https://cdn.sqhk.co/wadupaxi/guOvidz/the_lighthouse_keeper_s_daughter_movie.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461249/normal_5ffe468929b48.pdfIn PDF document text
    • http://vagoneviwesum.66ghz.com/arcelormittal_south_africa_limited_annual_report.pdfIn PDF document text
    • https://cdn.sqhk.co/pujimuxuja/Bhjjigc/3608606100.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_off0000e3b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3B6 4156 bytes
SHA-256: 9253c4ec90eb8b217ae91b3aef6412788d3d1419415539c5cfb70110cf842fd1
font_01_sfnt_off0000f1e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1E4 10224 bytes
SHA-256: ab3220269fa164eab59a770dbb4fc51ae5b1a6eaf9f08ab567e58833c8f820bb

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