Malicious PDF — malware analysis report

Static analysis result for SHA-256 154225be35b3bef6…

MALICIOUS

PDF

71.4 KB Created: 2021-02-15 11:33:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 29d358383f8037c6d96569a3354bdf8d SHA-1: f3351cf6a13ab676a8bafb0b144b16e6cb2e018b SHA-256: 154225be35b3bef659cee0fe05d87ef0e678b8113be76d3ceca390c5fb30ef23
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, which is disguised as a guide for replacing an RV toilet valve. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were extracted, the embedded URL is the primary indicator of a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://crophysi.ru/strik?utm_term=how+to+replace+dometic+rv+toilet+valve In PDF document text
    • https://cdn.sqhk.co/xagaxubibiz/9jjJjbw/spider_solitaire_free_games_24.pdfIn PDF document text
    • https://cdn.sqhk.co/nifodotiriru/Phhii06/bingo_drive_free_bingo_games_to_play.pdfIn PDF document text
    • http://vepaxezaso.22web.org/reset_form_dirty_angular_2.pdfIn PDF document text
    • https://cdn.sqhk.co/numorolele/cghG0Hm/modern_sofa_bed_sectional.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/kifutizijebuj/viwogugarebuwezonoxuvav.pdfIn PDF document text
    • https://s3.amazonaws.com/nemafu/arpan_film_ke_song.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/liguvumod.pdfIn PDF document text
    • https://s3.amazonaws.com/xalasawu/bajowavobopawor.pdfIn PDF document text
    • http://muwojes.epizy.com/xujisejodizijuxidufox.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/android_dialog_background_color_transparent.pdfIn PDF document text
    • https://s3.amazonaws.com/negonanopix/63950589356.pdfIn PDF document text
    • https://s3.amazonaws.com/miwolezedubujoz/wetanuvaronelaxumitozim.pdfIn PDF document text
    • https://s3.amazonaws.com/tarizirefevifab/analise_sintatica_exemplos.pdfIn PDF document text
    • http://gegokuberil.rf.gd/can_u_netflix_episodes_on_laptop.pdfIn PDF document text
    • https://s3.amazonaws.com/fobupojowojon/latest_western_union_app.pdfIn PDF document text
    • https://s3.amazonaws.com/lezerawe/82497463796.pdfIn PDF document text
    • http://xevorerokune.epizy.com/chen_guide_dota_2_7._18.pdfIn PDF document text
    • https://s3.amazonaws.com/fadadedezeker/phone_call_app_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/suxugipipolazog/injury_report_rams_vs_steelers.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_off0000dc46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC46 5152 bytes
SHA-256: bd9934b4eb02da2e49125dbcd251834eb6a73c43e492cdaeb2fa4912eea16604
font_01_sfnt_off0000edc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDC6 10100 bytes
SHA-256: 530286ba2841f24d103d3a0d4b8ac1163674a8b60236bcef957f70cfeffe28f4

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