Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ff2c48de27ccb4c…

MALICIOUS

PDF

88.7 KB Created: 2021-02-21 10:53:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: afbc5b65fcc2128ae3b777ac8caa8b5e SHA-1: 05d357a3862eef6aa840e968fdab9b00dc34b8c2 SHA-256: 8ff2c48de27ccb4ced3ca465677fa775ed29d57847e6f6e9fdeac52f8589be4a
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL, likely intended for a phishing or malware distribution campaign. The ML classifier and ClamAV detection strongly indicate maliciousness. The document body, though heavily obfuscated, suggests a lure related to an 'exercise program', which is a common tactic for phishing attacks.

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
  • 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/strik?utm_term=senior+elastic+band+exercise+program PDF link annotation
    • https://cdn.sqhk.co/wotutovebo/jcjdIlD/tobijatifakumu.pdfIn PDF document text
    • https://cdn.sqhk.co/wodaximewule/AagjbyP/galevaxixipexekewoxutu.pdfIn PDF document text
    • http://sdek-24.cc/40058866496zd14m.pdfIn PDF document text
    • https://cdn.sqhk.co/xaloxezajaga/mjjhTji/tourific_escapes_hollywood.pdfIn PDF document text
    • https://cdn.sqhk.co/mifigatira/eOtJibP/1080p_yoga_photoshop.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404285/normal_5ff416c6e604e.pdfIn PDF document text
    • https://cdn.sqhk.co/putuziboki/TjjrQji/flight_pilot_simulator_3d_mod_apk_revdl.pdfIn PDF document text
    • http://100p-f.ru/sunirelagabejawaxa9f5vm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4527345/normal_602bf343e5218.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454684/normal_5fdf0340d6ba6.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/gixawetopoli/2018_games_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/ammyy_admin_free_3._9.pdfIn PDF document text
    • https://s3.amazonaws.com/towakog/drowsy_maggie_sheet_music_violin.pdfIn PDF document text
    • https://s3.amazonaws.com/faxaxos/minute_book_template_canada.pdfIn PDF document text
    • https://s3.amazonaws.com/bexolamabad/kokopulefeve.pdfIn PDF document text
    • https://s3.amazonaws.com/kifutizijebuj/spotify_per_windows_xp.pdfIn PDF document text
    • https://s3.amazonaws.com/paxivogedewilu/28593348829.pdfIn PDF document text
    • https://s3.amazonaws.com/dubiditiginowo/auto_repair_manuals_reviews.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_off00011d39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D39 5704 bytes
SHA-256: 3f381379dba634c916953a89a292011c377bbca85f3c5a01afc94f8c0cb5aa39
font_01_sfnt_off0001308a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1308A 10888 bytes
SHA-256: 00a0ac7d6d039b491fe87129beafaf8946275fbdec5b0811b3292dc19018a195

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