Malicious PDF — malware analysis report

Static analysis result for SHA-256 423db49e7b23184c…

MALICIOUS

PDF

186.9 KB Created: 2015-07-28 11:01:46 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: d7759fd91971b0e832962e87bf272dd2 SHA-1: 457c82d9bb247dc976217a95231634c2e71f7acb SHA-256: 423db49e7b23184c0af12e73f07aba41dfe15151a60b6496010e2860dcb8b698
90 Risk Score

Malware Insights

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

The PDF file 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 the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site. No scripts were extracted, and the document body was not sufficiently readable to provide further context.

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%88%D0%B5%D0%BB%D0%BE%D0%BD%D0%B8%D0%BD+%D0%BE%D0%BB%D0%B5%D0%B3+%D0%B1%D0%B0%D0%B6%D0%B5%D0%BD%D0%BE%D0%B2+%D0%B2%D0%B8%D0%BA%D1%82%D0%BE%D1%80+%D0%B0%D1%83%D0%B4%D0%B8%D0%BE%D0%BA%D0%BD%D0%B8%D0%B3%D0%B8+%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//4201/4201013_adobe_photoshop_cs5_skachat_besplatno_na_russkom_yazuyke_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4217/4217873_overgrowth_alpha_204_skachat_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191101_irina_krug_i_aleksey_bryancev_skachat_torrent_vse_albomuy.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024814.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24814 3556 bytes
font_01_sfnt_off00025597.bin
2f0998bd69254ac82ffce1ec2ec10a42c0e092824d6a3cbd029179ef81fbf69d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25597 15128 bytes
font_02_sfnt_off000283ca.bin
2b7fd363026e5ff298b433477f9b76930d902589b2e77cf68d6a089e80f3f82d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x283CA 14520 bytes
font_03_sfnt_off0002aea3.bin
105733412cbadc25898a23d5502428e38310897f565ea57dede69bcc77b771ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AEA3 6656 bytes
font_04_sfnt_off0002c19c.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C19C 6084 bytes
font_05_sfnt_off0002d131.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D131 3752 bytes

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