Malicious PDF — malware analysis report

Static analysis result for SHA-256 91145cc968228df4…

MALICIOUS

PDF

185.2 KB Created: 2015-08-08 09:53:19 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6) First seen: 2021-05-23
MD5: b9bea96bf9fac93d5a4a84284db72481 SHA-1: 4f91c9479a1bbdb1f242b2cadcaa0926f27af848 SHA-256: 91145cc968228df436d5681dbbd3ef7d3da9f1d46d27d994a6684e0939cd8f6c
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The embedded URL, http://botcraftman.ru/..., is a strong indicator of malicious intent, likely serving as a lure for phishing or malware delivery. No scripts were extracted, but the presence of the malicious URL is sufficient evidence for this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 2

  • 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.
  • 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 http://botcraftman.ru/?lip&keyword=%D0%BF%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D0%B0+%D0%B4%D0%BB%D1%8F+%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE%D1%87%D0%B0%D1%82%D0%B0&charset=utf-8 In PDF document text
    • http://fastpic.ru/In PDF document text
    • http://www.liveinternet.ru/clickIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384545_biletuy_pdd_2014_skachat_besplatno_torrent.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384246_metro_luch_nadezhduy_skachat_torrent.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384566_mortal_kombat_4_skachat_na_kompyuter.pdfIn PDF document text
    • http://www.microsoft.com/typography/fonts/In PDF document text
    • http://www.microsoft.com/typography/fonts/YouIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000242bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x242BC 3556 bytes
SHA-256: 880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281
font_01_sfnt_off0002503f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2503F 14872 bytes
SHA-256: c5ab44bdacb827967fb1e5862f04c334e693660607ea416dac77e46da20392da
font_02_sfnt_off00027e12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27E12 14468 bytes
SHA-256: c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd
font_03_sfnt_off0002a8c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A8C4 6364 bytes
SHA-256: b0d7d54dbff0f6604d0dae0d31e7421903e6dbd195bed1a66e1f135236f2b158
font_04_sfnt_off0002bace.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BACE 6084 bytes
SHA-256: 819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3
font_05_sfnt_off0002ca63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CA63 3752 bytes
SHA-256: 9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e

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