Malicious PDF — malware analysis report

Static analysis result for SHA-256 3433faf92a5267ff…

MALICIOUS

PDF

78.5 KB Created: 2021-01-02 14:06:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 76c0e1d17f894b8322582df40dd14f02 SHA-1: 826a0111ff821192df3f23c50df6c5664fad99e8 SHA-256: 3433faf92a5267ff379ff2df681fc537a7b1cd242ee01b0bd15790b665b6f982
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a link that redirects to known malicious infrastructure, identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The document body, though heavily obfuscated, suggests a lure related to educational content ('Europe after world war 1 map worksheet') to entice users to click the malicious link. The ML classifier and ClamAV detection further support the malicious nature of this file, indicating it is likely a phishing or malware distribution attempt.

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://gettraff.ru/aws?utm_term=europe+after+world+war+1+map+worksheet In PDF document text
    • https://kobisizosupo.weebly.com/uploads/1/3/4/3/134316778/4030227.pdfIn PDF document text
    • https://nuzaguwimera.weebly.com/uploads/1/3/4/4/134492670/gefuxeponava.pdfIn PDF document text
    • https://vimubuko.weebly.com/uploads/1/3/4/6/134687604/674964ee97a5.pdfIn PDF document text
    • https://cdn.sqhk.co/dalubevemex/fjcOpVW/ball_games_online_unblocked.pdfIn PDF document text
    • https://nozirokopen.weebly.com/uploads/1/3/4/6/134613575/vebavitono.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/gowupuzokowuxes/12629264738.pdfIn PDF document text
    • https://s3.amazonaws.com/retisovojor/unblocked_games_77_online_basketball_legends.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c25615c-4351-48f3-9449-c69a9d39b02e/george_jones_songs_grand_tour.pdfIn PDF document text
    • https://s3.amazonaws.com/sonutopexaramuf/23450114715.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a8d6278-9024-493c-8e60-667bd7db198c/21813756227.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3d1d142-16dd-4a12-bc81-240e4e983bb2/15205786881.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e5e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5E5 5172 bytes
SHA-256: b9f0d78d1cab9b0e6cbb349a8b2703e6e7953729dcd3c59a2fc92b486a45341b
font_01_sfnt_off0000f79d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF79D 11256 bytes
SHA-256: e21ec0aac6fd379926a1c189e32ffa95a9270257f8c77bd3f75a847ca88e078f
font_02_sfnt_off00011d11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D11 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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