Malicious PDF — malware analysis report

Static analysis result for SHA-256 933f6deab25c2a81…

MALICIOUS

PDF

80.3 KB Created: 2021-03-26 09:55:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: b00c726dcf7db4f2cfa1dc16e77d8da0 SHA-1: d4adb6e1df244e800316d8c5430ddde948c4d967 SHA-256: 933f6deab25c2a813a69a0e68269edd17098970cf8a64db310d6ede548f98661
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains heuristics indicating it is a phishing lure, specifically using an image to redirect users to an SEO-optimized link. The primary URL identified, https://botokaw.ru/wix?keyword=the+real+meal+revolution+pdf, is associated with this phishing attempt. While no scripts were explicitly extracted, the nature of the PDF and the redirector suggest a potential for further malicious activity, such as downloading additional payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://botokaw.ru/wix?keyword=the+real+meal+revolution+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4452594/normal_5fde4be5a9634.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497395/normal_60086ccde8478.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369788/normal_5ffa2d3f39627.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446017/normal_6038b744e3f3f.pdfIn PDF document text
    • http://xunarepozufuz.mygamesonline.org/schlage_handpunch_3000_manual_espaol.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404990/normal_6028068a982e0.pdfIn PDF document text
    • http://jibakerutev.mypressonline.com/list_of_russian_verbs.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470678/normal_602179882543e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501962/normal_6054f67fb231d.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/tuzamada/olympus_om2n_instructions.pdfIn PDF document text
    • http://xinozotaga.rf.gd/b_v_ramana_maths_download.pdfIn PDF document text
    • http://tulajadulixo.myartsonline.com/the_birds_cast_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/werowibovezoje/57490875712.pdfIn PDF document text
    • http://bibuxidon.rf.gd/13419121510.pdfIn PDF document text
    • https://s3.amazonaws.com/mejigavukolu/fusorupuliselemo.pdfIn PDF document text
    • https://s3.amazonaws.com/vukusa/wopilewujukoda.pdfIn PDF document text
    • https://s3.amazonaws.com/jivagajamav/fipozata.pdfIn PDF document text
    • https://s3.amazonaws.com/divexikav/amor_perdoname_yo_soy_tu_amor_infiel.pdfIn PDF document text
    • https://s3.amazonaws.com/mesotodimus/data_analysis_toolpak_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/gisujubolidine/how_do_you_program_a_universal_remote_to_a_dynex_tv.pdfIn PDF document text
    • https://s3.amazonaws.com/jevopemosod/vebimof.pdfIn PDF document text
    • https://s3.amazonaws.com/fukezavazuj/file_police_report_online_bothell.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_off0000fbf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBF7 5112 bytes
SHA-256: 253aeab6f7c4fd852654a53b86bfee2c5eb42f77621ab63de5e9a490afbccda4
font_01_sfnt_off00010d34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D34 11524 bytes
SHA-256: 5a71786a4654094284365b6fa440867ee7ef3ff620c38c17934773ab64dd2f4c

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