Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e7cde5fdd3a345b…

MALICIOUS

PDF

80.0 KB Created: 2021-02-25 04:34:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 26d0a4acaa9810b68b4eff6c8e1b766f SHA-1: 90256b86dba8d28e5a709b1000821c557e9c7879 SHA-256: 2e7cde5fdd3a345b34c039d16f6ec42367955c36cfe103df9fc38333199fbd47
196 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous external links, many of which are part of an SEO link farm, suggesting a phishing or spam campaign. The embedded URL and the document body content, though heavily obfuscated, point towards a lure related to payment information. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing.

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://leonvi.ru/award?keyword=how+much+do+maids+get+paid+in+the+uk PDF link annotation
    • https://wunovolal.weebly.com/uploads/1/3/5/3/135311751/bigovap.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453900/normal_5ff96fe864470.pdfIn PDF document text
    • https://ronurakegilapoz.weebly.com/uploads/1/3/4/8/134852428/wilobakizukukujasab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454047/normal_5ff47a70848f0.pdfIn PDF document text
    • https://dibekojiworibo.weebly.com/uploads/1/3/1/6/131637919/pejukakezago.pdfIn PDF document text
    • https://juladuwupib.weebly.com/uploads/1/3/4/7/134763366/6623391.pdfIn PDF document text
    • https://milonotupilo.weebly.com/uploads/1/3/5/3/135347339/6179884.pdfIn PDF document text
    • https://dadojunolibete.weebly.com/uploads/1/3/2/6/132683289/tarebinom.pdfIn PDF document text
    • https://bikinolij.weebly.com/uploads/1/3/4/5/134514604/5269090.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/luworizesupox/78177088611.pdfIn PDF document text
    • https://s3.amazonaws.com/fizaxo/bosch_fridge_alarm_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/kovilowab/contusion_stevie_wonder_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/vitelitubovuluj/soluciones_informaticas_adv_sa.pdfIn PDF document text
    • https://s3.amazonaws.com/zukogi/dc_library_card_form.pdfIn PDF document text
    • https://s3.amazonaws.com/sitok/sejux.pdfIn PDF document text
    • https://s3.amazonaws.com/dudigonifu/play_store_games_free_for_mobile.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_off0000fc75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC75 5476 bytes
SHA-256: 868ebd1f0cf0d32d3077d55a736f139231af7f09daaa7c0eab6849e0dfe870e6
font_01_sfnt_off00010f01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F01 10472 bytes
SHA-256: 322c7a89409eed2bc5c570d53e820362d4483a5ee0dae7db63eec4d33704b5ea

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