Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5e606274ef62668…

MALICIOUS

PDF

85.4 KB Created: 2021-02-25 04:13:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 87273b029434fe950fb126ef10b5c248 SHA-1: 387e33babcb64fd9b26eba6a9923752ad3639933 SHA-256: f5e606274ef626689b2f55cfc295e0ea63428ae1ee17602cc3089601427676d3
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI that redirects to a URL associated with phishing, disguised as product reviews. The presence of external URIs and the ML classification strongly suggest a phishing attack vector.

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://baarspo.ru/123?utm_term=schwinn+m17+270+recumbent+exercise+bike+reviews PDF link annotation
    • http://bikejesoxatelo.mygamesonline.org/does_president_need_a_capital_letter.pdfIn PDF document text
    • http://bewugexujiz.iblogger.org/arabic_bible_outreach_ministry.pdfIn PDF document text
    • http://kokoponabile.iblogger.org/zekonatupunolopobivuwi.pdfIn PDF document text
    • http://nigoguno.scienceontheweb.net/zifabumutudetunenuw.pdfIn PDF document text
    • http://lajodibibodi.getenjoyment.net/65505931523.pdfIn PDF document text
    • http://femuvapazurom.iblogger.org/cpa_marketing_guide_bangla.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452372/normal_5fd9cc8c92168.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366969/normal_601ba583294e3.pdfIn PDF document text
    • http://newapegujopabi.22web.org/i_robot_book_summary_sparknotes.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374009/normal_5ff3e6ba8caa3.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/jajoxulabojaso/touch_vpn_apkpure.pdfIn PDF document text
    • http://muxolisakij.epizy.com/nogalajobixuxukutupi.pdfIn PDF document text
    • https://s3.amazonaws.com/kujesulad/rukuwiwuj.pdfIn PDF document text
    • http://dunupepemogakiw.epizy.com/free_avery_5160_template_google_docs.pdfIn PDF document text
    • https://s3.amazonaws.com/dedinavesute/boxed_family_font_free.pdfIn PDF document text
    • http://zovebosovu.rf.gd/chopin_ballade_3_sheet_music.pdfIn PDF document text
    • http://ninanupazazudad.rf.gd/sample_music_brochure_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/mixanaz/36930818666.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_off0000ff0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF0C 5504 bytes
SHA-256: a66f6dfee9debafaef3837201128a959d09c7871890dd9a683f4cc908c88b64b
font_01_sfnt_off000111ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111AE 11532 bytes
SHA-256: b64885bfe999dfde55695ffb5c098c24684272bb5846c5d674aff3969fcc9a3e
font_02_sfnt_off0001383a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1383A 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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