Malicious PDF — malware analysis report

Static analysis result for SHA-256 794603f4d766b0f2…

MALICIOUS

PDF

75.8 KB Created: 2021-01-11 17:15:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 9d3127bee3f5c9583baf1105fbd5a18d SHA-1: 75cfb9cb3fec2d60d1201906e422f15632c8dbb8 SHA-256: 794603f4d766b0f23546b4a4f9323e130933a385da2159b32416d21366109974
162 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/aws?utm_term=lagu+dj+remix+terdiam+sepi+uyeshare'. This, combined with a high ML classifier score and ClamAV detection as 'Pdf.Phishing.Trojan', strongly indicates a phishing or malware distribution attempt. The presence of embedded URLs and a 'download button' lure further supports this conclusion.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://gettraff.ru/aws?utm_term=lagu+dj+remix+terdiam+sepi+uyeshare In PDF document text
    • https://cdn.sqhk.co/gitaligido/igFMrib/90666810493.pdfIn PDF document text
    • https://cdn.sqhk.co/kifuzopeko/cbA17hb/60165281222.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453575/normal_5ff717a28caaf.pdfIn PDF document text
    • https://cdn.sqhk.co/rifokinimito/hegijcC/71241212864.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415292/normal_5fe52d0d7b7fc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405674/normal_5fa8a3787c438.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/poresi/mulinopufe.pdfIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/gatepujilu.pdfIn PDF document text
    • https://s3.amazonaws.com/lazolu/car_registration_renewal_form_hong_kong.pdfIn PDF document text
    • https://s3.amazonaws.com/fajetufekejo/banjo_tooie_rom_android.pdfIn PDF document text
    • https://s3.amazonaws.com/jebokizez/abraham_lincoln_caador_de_vampiros_mega.pdfIn PDF document text
    • https://s3.amazonaws.com/wurivuve/joguligivadibumir.pdfIn PDF document text
    • https://s3.amazonaws.com/babetafaperaxov/hair_editing_app_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/firudegix/75296870414.pdfIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/oil_filter_donaldson_cross_reference_chart.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d4ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4EA 5528 bytes
SHA-256: e66fa640ea4d57b0ce0ca98eafaf0c80a2e1efe404dfeabe966a1b4565082a9f
font_01_sfnt_off0000e7a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7A3 10904 bytes
SHA-256: b5cf02081e2aa465c5120b2a75d95235499830d89e7cc2b9da4a0ee90305ac46
font_02_sfnt_off00010d12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D12 16060 bytes
SHA-256: df1d2c903cabdf2976887e260da0b25217edeb5ce2b71f315001024534e8e210

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