Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d17a4584a977411…

MALICIOUS

PDF

185.4 KB Created: 2015-07-24 09:15:56 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: b6f931561e16f2b2a2df555a377743cb SHA-1: f12aa29d4bd0758c61f239b9f989ef7ee6e97382 SHA-256: 7d17a4584a9774115b37f1f327aa004c8a29a053e29c530ec69ecbd5737069a1
90 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, http://botcraftman.ru/, which is a strong indicator of malicious intent. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, but the embedded URL is sufficient to classify this as a malicious redirector 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%BF%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D1%83+%D0%B4%D0%BB%D1%8F+%D0%B4%D0%BE%D1%81+%D0%B0%D1%82%D0%B0%D0%BA%D0%B8&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185625_vtoraya_svadba_skachat_cherez_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4189/4189328_skanvorduy_onlayn_besplatno_teschin_yazuyk.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184380_igra_moya_strana_2020_dlya_kompyutera_skachat_besplatno.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002435a.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2435A 3556 bytes
font_01_sfnt_off000250dd.bin
e9345ddb9e1c15b52e5572ce60a55d616698cb0f3ce11c5ea7e7918e580ef7e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x250DD 14404 bytes
font_02_sfnt_off00027e09.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27E09 14468 bytes
font_03_sfnt_off0002a8bb.bin
32ef6ad9967d858866a07b949e661d941db7fe0d3c71c6ba488aba33ad90d789		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A8BB 6580 bytes
font_04_sfnt_off0002bbaa.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BBAA 6084 bytes
font_05_sfnt_off0002cb3f.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CB3F 3752 bytes

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