Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a19477e360f5ebf…

MALICIOUS

PDF

188.2 KB Created: 2015-07-24 05:24:39 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: b5705386413042a432f5afe1955adbd1 SHA-1: 284ff20cc3cbdd4b233ba2f0e18a527f63b156a5 SHA-256: 6a19477e360f5ebf73ba3b989cc5f8592ebdbf888fbdcec1a415237948fdc6b5
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the malicious redirector strongly suggest a phishing or malware distribution attempt.

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B2%D0%B8%D0%BD%D0%B4%D0%BE%D0%B2%D1%81+7+%D0%BC%D0%B0%D0%BA%D1%81%D0%B8%D0%BC%D0%B0%D0%BB%D1%8C%D0%BD%D0%B0%D1%8F+64+%D0%B1%D0%B8%D1%82+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+iso&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187557_prohodnoy_ball_po_literature_2015.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187456_dipak_chopra_idealnuyy_ves_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185299_torchlight_2_synergies_mod_skachat_torrent.pdf
    • http://www.microsoft.com/typography/fonts/You
    • http://www.microsoft.com/typography/fonts/

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002b075.bin
78d54c0b8dad311fb8f88757e8cd480b317e34d55c2445c4f828322732ea6a72		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2B075 7588 bytes
font_00_sfnt_off000248eb.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x248EB 3556 bytes
font_01_sfnt_off0002566e.bin
96573b7041cfa5171f26a9bd920c817eeb96836c9379ae0dd809cc2d4ff57b82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2566E 15140 bytes
font_02_sfnt_off00028590.bin
fcd35d947f3d509fefda979f6a6a7a320acded78eb8459500e3e0527d5d6246e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28590 14512 bytes
font_04_sfnt_off0002c6d0.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C6D0 6084 bytes
font_05_sfnt_off0002d665.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D665 3752 bytes

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