Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9b2c809388222ad…

MALICIOUS

PDF

78.7 KB Created: 2021-04-04 01:53:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 787036cc285e41b82dac0d3e0e2b98a8 SHA-1: 5c7a5f4fdae382de67ef97e9595baafaca3072d2 SHA-256: d9b2c809388222ad7b320a13af742cd4396481c823a5b3d4f0bb62f782af904b
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous external links, including one to 'seumenha.ru' disguised as a search result for piano sheet music, likely to trick users into downloading further malicious content. The PDF structure and embedded links suggest an attempt to exploit users through deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://seumenha.ru/award?keyword=green+day+time+of+your+life+piano+sheet+music+pdf PDF link annotation
    • https://cdn.sqhk.co/nosilaxuziz/jE8YvQS/defugelobovuvevavaba.pdfIn PDF document text
    • http://tubujagowip.iblogger.org/flowers_in_the_attic_2014_age_rating.pdfIn PDF document text
    • http://relibafogat.sportsontheweb.net/jawepazirixaneg.pdfIn PDF document text
    • http://tesekal.mygamesonline.org/surface_area_and_volume_of_all_shapes.pdfIn PDF document text
    • https://cdn.sqhk.co/kuruwoke/SLG5ybu/tonenijajitevek.pdfIn PDF document text
    • http://vixegoxufareka.getenjoyment.net/tunigabopogixena.pdfIn PDF document text
    • http://xexapitanegis.getenjoyment.net/bcece_medical_certificate_format.pdfIn PDF document text
    • https://cdn.sqhk.co/jeforije/phdiR7c/30422517267.pdfIn PDF document text
    • http://pazadixokumox.sportsontheweb.net/86897364677.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://f733e552-90a1-4d1f-83ca-a6b36afcf31c.filesusr.com/ugd/38bf1f_4c0f3c106bde4eab99762a70a3ff1998.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lomogas/naruto_games_for_pc.pdfIn PDF document text
    • https://da550aaf-34ae-4f9b-ad82-7836b82beebe.filesusr.com/ugd/a203e6_35726d98d0324f978cfb2890cb3206b8.pdf?index=trueIn PDF document text
    • http://rugefaf.rf.gd/75235080966.pdfIn PDF document text
    • http://likefiradoweze.rf.gd/enormous_crocodile_template.pdfIn PDF document text
    • http://neloralo.myartsonline.com/1110184167.pdfIn PDF document text
    • http://dasobiviwadodaj.atwebpages.com/roxajewuwokegunip.pdfIn PDF document text
    • https://71a0d42b-91d5-4e94-9338-ff69ca8a624b.filesusr.com/ugd/e5d5e5_d75bd74432dc4160b5cd347a35735abb.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vukujidor/olx_pakistan_lahore.pdfIn PDF document text
    • https://s3.amazonaws.com/xefezesebusu/a_change_is_gonna_come_aretha_franklin_lyrics_traduction.pdfIn PDF document text
    • http://melamefi.rf.gd/79539315797.pdfIn PDF document text
    • https://e5baaea7-7007-41de-9367-4ebf3ed55875.filesusr.com/ugd/8e1900_ebdbca117b6540c9addf4c8c6a37c30c.pdf?index=trueIn PDF document text
    • https://f4a80ce2-0a24-44e2-aff7-13c87a434ee9.filesusr.com/ugd/ace063_9b3bd0392aeb43debf0391fc31e49736.pdf?index=trueIn 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_off0000f454.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF454 5528 bytes
SHA-256: a4c7b087b7cf64b2842194b131646f56c513e289e746229325db069a4ca2f7e2
font_01_sfnt_off00010705.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10705 11148 bytes
SHA-256: 2e308c36c05f97333cf8cd9a2d052ef7c372ed2207ad76f72cd064bbb0a828e7

Open this report in the interactive analyzer, or submit your own file for analysis.