Malicious PDF — malware analysis report

Static analysis result for SHA-256 20585441ff3d7d92…

MALICIOUS

PDF

76.8 KB Created: 2020-11-11 21:04:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-07-19
MD5: 9f979aef1b0f73a0ff82afc3cb4f3faa SHA-1: 1ab6e2400396ed53c8f2f0a9f59e912b6c81f3a3 SHA-256: 20585441ff3d7d92730c8d1ab42b2f836dd3c020f68991fc74bea78b1b3dbabd
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://trafficel.ru/wb?keyword=boyce%20avenue%20mirrors%20mp4 PDF link annotation
    • https://s3.amazonaws.com/befevifa/40769975377.pdfIn PDF document text
    • https://s3.amazonaws.com/janodojivi/sunabotubawuker.pdfIn PDF document text
    • https://s3.amazonaws.com/kakef/33820115392.pdfIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/83766578176.pdfIn PDF document text
    • https://wufikasokuwomoz.weebly.com/uploads/1/3/4/3/134359410/jepaferokajim.pdfIn PDF document text
    • https://s3.amazonaws.com/kawotexulozax/boguravas.pdfIn PDF document text
    • https://s3.amazonaws.com/sisaxu/33496283445.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzumeb/vietnamese_alexandre_de_rhodes.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000c533.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000c533.bin)
    • https://uploads.strikinglycdn.com/files/763609ea-87cd-403b-809d-547321527db2/5408074833.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8124246-5a21-4861-a9e6-44caa68d1587/10286641972.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/074abd19-ef91-4b7a-a532-4f7a14d56f98/xabesesowebexiginibe.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://dejavu.sourceforge.netIn extracted file (stream_004_off0000fb23.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (stream_004_off0000fb23.bin)
    • http://scripts.sil.org/OFLIn extracted file (font_00_sfnt_off0000c533.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000fb23.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xFB23 25932 bytes
SHA-256: 2c25a199354bafa7cfc9d463f945b3e8a52bf7b6c3729cd662ce0e5cd0caf53f
font_00_sfnt_off0000c533.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC533 5344 bytes
SHA-256: 03cdd85b9f6dd7437ab4fb74fde358f4e5efb7dcc0eb59e470e8f668a1698aab
font_01_sfnt_off0000d767.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD767 10396 bytes
SHA-256: f9ce4cbfe3c59a629d5ad0a1f6b90e2c611e6264fcba2ae8f9fd543ecb20e01e