Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e5a1daab13fb9ba…

MALICIOUS

PDF

82.0 KB Created: 2021-01-23 05:41:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e2f294d56ee862583396de014b5899c6 SHA-1: e87ad9aef98cfa1eb03b1d37fcd6de959f6be4e0 SHA-256: 2e5a1daab13fb9ba0f0088bf90c32f69a556f77edc86d570eef851cf26694f39
154 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://traffmen.ru/123?utm_term=mk+games+bh+%25C3%25A9+confiavel'. This indicates the document's primary purpose is to lure the user to a potentially harmful external site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious URL is sufficient evidence of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffmen.ru/123?utm_term=mk+games+bh+%25C3%25A9+confiavel
    • https://static.s123-cdn-static.com/uploads/4473403/normal_5ffbfea6231be.pdf
    • https://static.s123-cdn-static.com/uploads/4473642/normal_6001919c3fa5c.pdf
    • https://static.s123-cdn-static.com/uploads/4471455/normal_5ff6ace4495bf.pdf
    • https://static.s123-cdn-static.com/uploads/4365563/normal_5ff09c5f306fd.pdf
    • https://site-1237736.mozfiles.com/files/1237736/wipubugiladuxiwopev.pdf
    • https://static.s123-cdn-static.com/uploads/4450256/normal_6002a06215cb8.pdf
    • https://site-1173424.mozfiles.com/files/1173424/92421977167.pdf
    • https://static.s123-cdn-static.com/uploads/4393353/normal_5fe3b45100634.pdf
    • https://site-1168003.mozfiles.com/files/1168003/fiwuzupi.pdf
    • http://pumujavebedopa.iblogger.org/analog_signal_and_digital_signal.pdf
    • https://static.s123-cdn-static.com/uploads/4423155/normal_5fca95073bc2d.pdf
    • https://static.s123-cdn-static.com/uploads/4487424/normal_5ffdb8b0842c4.pdf
    • https://static.s123-cdn-static.com/uploads/4477873/normal_5ffbb2974742c.pdf
    • https://site-1172915.mozfiles.com/files/1172915/japanese_alphabet_song_tiktok_2020.pdf
    • https://site-1225904.mozfiles.com/files/1225904/jingle_bells_on_saxophone_sheet_music.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/pululusodogi/sivenizoditaworezem.pdf
    • https://s3.amazonaws.com/wezukep/woladif.pdf
    • http://wemikovovafebo.epizy.com/capacitor_types_and_uses.pdf
    • https://s3.amazonaws.com/mexijegedakol/58436840927.pdf
    • https://s3.amazonaws.com/rodigapigeta/71391424369.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da52.bin
cf0f31671f7aea5dc7742d97e16c27169dea7816544b8015bab5045019165028		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDA52 5612 bytes
font_01_sfnt_off0000ed22.bin
897c4d7e7de305b067185206cef741a83d5dd0dbc2d3e972e6b74fe02061ffef		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED22 3900 bytes
font_02_sfnt_off0000fc22.bin
69d9c23b1459fdf0150c33e31c5c2b0c11982806d93df73c1da50c3140e28ff4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFC22 11916 bytes
font_03_sfnt_off00012326.bin
44b8022c2a84fec3dc397bc3814882f0590d3d8e5f69667e83b3bad4a88aeee6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12326 16208 bytes

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