Malicious PDF — malware analysis report

Static analysis result for SHA-256 34ee224c91b90bf9…

MALICIOUS

PDF

68.0 KB Created: 2021-02-15 01:11:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 95e4fd1e78009bc652e109efb20f7d4e SHA-1: 4d783ebaecd7dbd831233601ff1fb44823c77e03 SHA-256: 34ee224c91b90bf95956cd4021fab9bc057c7660b743b1ed3f7a67e22e955333
196 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many of which point to SEO-optimized redirectors and link farms, indicating a phishing or scam attempt. The heuristic 'PDF_SEO_LINK_FARM' and 'PDF_SEO_UTM_REDIRECTOR_LINK' strongly suggest this is part of a larger SEO poisoning campaign. The presence of embedded URLs and the ML classifier output further support the malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://maypoin.ru/wix?keyword=keys+to+the+inner+universe+pdf+free+download PDF link annotation
    • https://cdn.sqhk.co/defisepeniba/jfiehDU/siwefodivoveku.pdfIn PDF document text
    • http://xeresorejal.iblogger.org/kufokufafokofirikumuju.pdfIn PDF document text
    • https://cdn.sqhk.co/temirikuji/ffDY3Nl/69026652180.pdfIn PDF document text
    • https://xazegonegexedej.weebly.com/uploads/1/3/2/6/132683071/3838048.pdfIn PDF document text
    • https://cdn.sqhk.co/genamudazunu/aWgjjg7/retro_aesthetic_wallpaper_hd.pdfIn PDF document text
    • https://tifixexeruwa.weebly.com/uploads/1/3/2/6/132682204/e70d746f9.pdfIn PDF document text
    • https://poxuweke.weebly.com/uploads/1/3/1/6/131606533/robijoliler.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/ruzaganog/73899583726.pdfIn PDF document text
    • https://s3.amazonaws.com/jasadavebaga/die_cutting_machine_for_sheet_metal.pdfIn PDF document text
    • https://s3.amazonaws.com/sumesawoxajew/bidubozuxevedo.pdfIn PDF document text
    • http://goxakimolo.epizy.com/natarexibifosonojigaji.pdfIn PDF document text
    • https://s3.amazonaws.com/xufujofaleki/hearthstone_warlock_deck_guide.pdfIn PDF document text
    • http://wikidupuzok.epizy.com/kannada_old_songs_audio.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxime/88052856080.pdfIn PDF document text
    • https://s3.amazonaws.com/dejazuvorira/marine_archaeology_in_india.pdfIn PDF document text
    • https://s3.amazonaws.com/naxozelozude/83933535919.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_off0000cd39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD39 5352 bytes
SHA-256: aeeeda7bb0435bffff04fe1ff40349ba6aacc627e4afc9f79ea116e9beb4d2d0
font_01_sfnt_off0000df8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF8C 10200 bytes
SHA-256: 82325aeddf202612000ea30d05fbfafa63c3884c0bfef68fa208bb6f9bb69094

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