Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2b70807b983db67…

MALICIOUS

PDF

186.7 KB Created: 2015-07-24 01:14:00 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: b08604092b621dcd37738551e6c74ce9 SHA-1: 4a9ef1cff7dffc334ddbbaeee04e95d09a428754 SHA-256: b2b70807b983db67ff025c17cc9f52cf4bcac66b8d2218202010ca420e48c6f5
90 Risk Score

Malware Insights

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

The PDF was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL http://botcraftman.ru/... is confirmed as a malicious redirector, suggesting the document's purpose is to lure users to a harmful site. No scripts were extracted, but the primary malicious functionality appears to be the redirection.

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%A1%D1%86%D0%B5%D0%BD%D0%B0%D1%80%D0%B8%D0%B9+%D0%9A%D0%BE%D0%BD%D1%86%D0%B5%D1%80%D1%82%D0%B0+%D0%9F%D0%BE%D0%B4%D0%B2%D0%BE%D0%B4%D0%BA%D0%B8+%D0%9A+%D0%9D%D0%BE%D0%BC%D0%B5%D1%80%D0%B0%D0%BC&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185356_skachat_sbornik_chitov_na_tanki_onlayn.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4186/4186606_skachat_igru_chuzhoy_protiv_hischnika_3_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184774_skachat_besplatno_usb_drayver_dlya_telefona_fly_iq_245.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000245a6.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x245A6 3556 bytes
font_01_sfnt_off00025329.bin
23de332c4b7a41b10ecd8afd027962a73bc28737a770812320380ca4dadb151b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25329 15344 bytes
font_02_sfnt_off00028331.bin
91eb1f122311c2a1ee44552c9c9b4ccc9b713a357469b18f73fb955ad13a5fcf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28331 14468 bytes
font_03_sfnt_off0002ade2.bin
91192295a6e226154f34613356cc88e8649293e021fb16c9581b794a88dfebee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ADE2 6664 bytes
font_04_sfnt_off0002c0e8.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C0E8 6084 bytes
font_05_sfnt_off0002d07d.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D07D 3752 bytes

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