Malicious PDF — malware analysis report

Static analysis result for SHA-256 e232bddc86b880a7…

MALICIOUS

PDF

66.7 KB Created: 2021-03-27 11:52:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 4783ce9294aef4d6ac1d6f61c7be3540 SHA-1: 33ec222b4b7715ef2b439959bf96b899af89e4ba SHA-256: e232bddc86b880a7820a6af0d4c7bf1ee144663edcc0980e521a94505797a4da
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one specifically linking to 'ponafet.ru/wix?keyword=pokemon+yellow+unblocked', suggesting a lure for users searching for game-related content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery. The document's structure and numerous links to disposable hosting further support a malicious purpose.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://ponafet.ru/wix?keyword=pokemon+yellow+unblocked PDF link annotation
    • http://alcexpress3.xyz/how_to_reset_filter_light_on_honeywell_thermostatxpse2.pdfIn PDF document text
    • http://lg-copyright.com/pekatamitrxcnj.pdfIn PDF document text
    • https://noxiwojudom.weebly.com/uploads/1/3/4/7/134723323/nobif_bivevibogat.pdfIn PDF document text
    • https://gapakoxolu.weebly.com/uploads/1/3/4/7/134745497/0c193c.pdfIn PDF document text
    • http://dutov.org/wipeximutipvqj.pdfIn PDF document text
    • http://mp4.design/brothers_film_anthem_video_songb3m3t.pdfIn PDF document text
    • https://topizamo.weebly.com/uploads/1/3/4/4/134435864/mubivibi-redavun-rudojenafakapij.pdfIn PDF document text
    • http://raguvigawak.mypressonline.com/sujok.pdfIn PDF document text
    • http://rotukefune.getenjoyment.net/sodium_alginate_structure.pdfIn PDF document text
    • http://nncucuucuc.space/citizen_gn-4w-s_set_time3grq2.pdfIn PDF document text
    • http://devlp.club/how_to_be_a_child_care_centre_manager21xm6.pdfIn PDF document text
    • https://jajibesuwazigix.weebly.com/uploads/1/3/1/3/131383486/fda6342218302c.pdfIn PDF document text
    • http://jiteruruw.sportsontheweb.net/10690371977.pdfIn PDF document text
    • https://dujililapute.weebly.com/uploads/1/3/5/3/135347223/938f8ae4dc0b558.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/naxozelozude/comcast_tv_guide_app_ipad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8b4382b-024a-4de6-82ba-e696a2999b16/how_to_post_adjusting_journal_entries_in_quickbooks_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d841c1c-e55b-4c73-95fe-4ce06fa699bb/36481113467.pdfIn PDF document text
    • https://s3.amazonaws.com/tarizirefevifab/25053192141.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_off0000c554.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC554 5000 bytes
SHA-256: 14f078bdd6d91b796c7928964c386ecd8dcdabd9c11b44ae91f5b76a3b0abdce
font_01_sfnt_off0000d665.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD665 11072 bytes
SHA-256: 1d4e68bb9abc39ab831a81b9890789a42b8fe2d25383cb85c93091eeb0d884d0

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