Malicious PDF — malware analysis report

Static analysis result for SHA-256 5372931b9262eb50…

MALICIOUS

PDF

185.9 KB Created: 2015-07-24 14:13:55 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c5f5d78d1c67a8ff7b4ad39803f09fbe SHA-1: 14e34b34e5339701b08421f718da5b7c77e3b7c1 SHA-256: 5372931b9262eb50009f266a953021d7522affd7f25d00b74f1e17c514ab99ea
90 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, botcraftman.ru. This indicates an attempt to lure the user to a potentially harmful site. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, and the document body was truncated, limiting further analysis of the specific lure.

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=windows+xp+home+edition+sp2+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191607_skachat_igru_kazaki_snova_voyna_besplatno_i_bez_registracii.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192481_skachat_kafel_60_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4186/4186261_skachat_bespalevnuyy_aim_kfg_dlya_ks_16.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a87b.bin
9441446206bc222e4d67ac73455fd7b6534e3d6eee1f7d316ac85aa8c0af538e		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A87B 7332 bytes
font_00_sfnt_off000240d9.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x240D9 3556 bytes
font_01_sfnt_off00024e5c.bin
c1a9cbb1c304a8383cb25025683d8bee083ff5fa52a351484d08e03aff44d91f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24E5C 14772 bytes
font_02_sfnt_off00027c5a.bin
7230c7190422ececf5e0b22d16aa56dbd50faadd92d2899eff7d31f899da1e94		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27C5A 14980 bytes
font_04_sfnt_off0002bdda.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BDDA 6084 bytes
font_05_sfnt_off0002cd6f.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CD6F 3752 bytes

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