Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e165dcb017ed576…

MALICIOUS

PDF

185.0 KB Created: 2015-07-25 00:20:57 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 186f69b43b5d3623b33bfcfd07b68f80 SHA-1: 631644399cabf9f2a3ede787106bc61eac03da35 SHA-256: 8e165dcb017ed576786d48ea178f0ecb9e33f2aabce043f6e22facf3c00f4a41
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL http://botcraftman.ru/... is identified as a malicious redirector, suggesting the document's purpose is to lure the user to a harmful destination. No scripts were extracted, and the document body was not parsable.

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%98%D0%B3%D0%BE%D1%80%D1%8C+%D0%B0%D0%BD%D0%B0%D1%82%D0%BE%D0%BB%D1%8C%D0%B5%D0%B2%D0%B8%D1%87+%D1%85%D0%BE%D1%80%D1%82+%D1%88%D0%B0%D1%85%D1%82%D0%B5%D1%80+3&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192585_olimpiada_po_matematike_8_klass_s_resheniem.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185365_skachat_naruto_2_sezon_vse_serii_cherez_torrent_ozvuchka_2x2.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4193/4193923_skachat_mod_divayn_rpg_na_maynkraft_152.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024198.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24198 3556 bytes
font_01_sfnt_off00024f1b.bin
6d2dd039525a1a99854826339073a3a358927d5714fa9fdc79600fcfa24c6ab3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24F1B 14688 bytes
font_02_sfnt_off00027cdc.bin
7df77554febdf09f12456a2e1809b4ff96e4ac2f5adf609c59c61bcaa03f7f2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27CDC 14588 bytes
font_03_sfnt_off0002a7ea.bin
852364b8d2c8379481d7f740fc6679c03c22da0da4722334397dadeb8c34e41c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A7EA 6392 bytes
font_04_sfnt_off0002ba00.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BA00 6084 bytes
font_05_sfnt_off0002c995.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C995 3752 bytes

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