Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b789a27996f7ccb…

MALICIOUS

PDF

72.5 KB Created: 2021-02-05 05:46:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: b426d69d0ad889cae775a37965cfa050 SHA-1: 040a005b0e090c685ce4bbe3041c34a81595edee SHA-256: 9b789a27996f7ccb79eabc05affed93a45a3d29e96b9615c205a03bb0fae53ae
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file is identified as malicious by multiple heuristics, including ML classification and ClamAV detection, flagging it as a phishing trojan. It contains an external URI and an image lure pointing to a redirector URL, suggesting a phishing attempt to lure users to download further malicious content. No scripts were extracted, but the PDF structure and detected threat indicate a phishing campaign.

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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://bologen.ru/123?utm_term=mike+barnes+cobra+kai+3 PDF link annotation
    • http://naturagrush.space/2420439037kaaaj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371514/normal_600562094f1d4.pdfIn PDF document text
    • https://cdn.sqhk.co/bidogefapo/geggj1I/diablo_t1000_tuner_compatibility.pdfIn PDF document text
    • https://cdn.sqhk.co/gikasiful/fgdid9h/pop_music_mix_2019_mp3_download.pdfIn PDF document text
    • https://ludurodeb.weebly.com/uploads/1/3/4/8/134852143/1373bb2878a34.pdfIn PDF document text
    • https://waxebusesu.weebly.com/uploads/1/3/4/7/134770319/8e975.pdfIn PDF document text
    • https://cdn.sqhk.co/doginifa/ggKfFCl/badland_winch_2500_parts.pdfIn PDF document text
    • https://durirumis.weebly.com/uploads/1/3/3/9/133999752/wigedis.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483836/normal_5fee0087a7e70.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388041/normal_6000194c3f3bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411493/normal_5fe80c698efdf.pdfIn PDF document text
    • https://cdn.sqhk.co/lokiwejawe/jjz6Tid/61295341139.pdfIn PDF document text
    • https://jipafedi.weebly.com/uploads/1/3/0/8/130813136/rusepom_loxobeteso_dosezasatelef.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/xebuvuwov/35174782049.pdfIn PDF document text
    • https://s3.amazonaws.com/bomifabipi/topology_textbook.pdfIn PDF document text
    • https://s3.amazonaws.com/tesotiwapax/32752427313.pdfIn PDF document text
    • https://s3.amazonaws.com/jedadokuti/india_csr_outlook_report_2019.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_off0000de7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE7A 5132 bytes
SHA-256: 665d7ff15eb924216c50b32bab4974bac40df52a4cca3672d35504a6702ebe73
font_01_sfnt_off0000f011.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF011 10936 bytes
SHA-256: f5fa307e3ad9d35970164603a18194a7f220b9a05a35f1124e65185882e48d4d

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