Malicious PDF — malware analysis report

Static analysis result for SHA-256 501dedc174c58608…

MALICIOUS

PDF

185.3 KB Created: 2015-07-25 12:23:03 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: f56c73403c3dab85788347733f66f810 SHA-1: a4c0004f7640dab7b560aa872af08c774d76dd68 SHA-256: 501dedc174c58608654bd5357db104a662c9173bfe609d104cd1689cf05a106a
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector. The URL `http://botcraftman.ru/` is associated with malicious activity. The document body appears to be malformed or truncated, preventing a clear understanding of its content, but the presence of the malicious link is a strong indicator of malicious intent. No scripts were extracted from this sample.

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=sony+vegas+pro+12+%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+x32&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185251_spin_tires_2014_versiya_1001_skachat_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4199/4199087_besplatnuye_temuy_na_nokia_h_202_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4202/4202520_govoryaschiy_kot_tom_skachat_na_android.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a535.bin
a1cd44b10783a32fa52f2a3d808e54332762549a27ee73d845d9ed30cbf3685e		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A535 7556 bytes
font_00_sfnt_off00023e7a.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23E7A 3556 bytes
font_01_sfnt_off00024bfd.bin
0d27e290de93be0506a902220d7b43f2526e9d76a3f8af78b5535dcc1ccf66c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24BFD 14696 bytes
font_02_sfnt_off00027970.bin
899617dd00e49eddaa3727926fcb659e39f3424d7177480acfc7bf1d6b95991d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27970 14796 bytes
font_04_sfnt_off0002bb6b.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BB6B 6084 bytes
font_05_sfnt_off0002cb00.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CB00 3752 bytes

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