Malicious PDF — malware analysis report

Static analysis result for SHA-256 a687cb2f5471f4ac…

MALICIOUS

PDF

187.6 KB Created: 2015-07-23 21:18:09 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 045baf6bd734a4866478fd303f756cec SHA-1: a2192b7d19a2dbc33073889c5035c69585f1301f SHA-256: a687cb2f5471f4ac6e9db77e27f9ca2a21e5f822ab0951d6774a11b8dd986062
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 infrastructure. The embedded URL, http://botcraftman.ru/..., is highly suspicious and likely serves as a lure to a phishing or malware distribution site. No scripts were extracted, but the presence of the malicious link is sufficient evidence for this assessment.

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=%D0%B4%D0%BD%D0%B5%D0%B2%D0%BD%D0%B8%D0%BA+%D0%B4%D0%BE%D0%BA%D1%82%D0%BE%D1%80%D0%B0+%D0%B7%D0%B0%D0%B9%D1%86%D0%B5%D0%B2%D0%BE%D0%B9+3+%D1%81%D0%B5%D0%B7%D0%BE%D0%BD+1+%D1%81%D0%B5%D1%80%D0%B8%D1%8F+%D0%B4%D0%B0%D1%82%D0%B0+%D0%B2%D1%8B%D1%85%D0%BE%D0%B4%D0%B0&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184281_skachat_prilozhenie_sberbank_onlayn_na_kompyuter.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184850_skachat_launcher_maynkraft_172_s_modami_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183253_nacionalnuyy_proekt_dostupnoe_i_komfortnoe_zhile.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000248e4.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x248E4 3556 bytes
font_01_sfnt_off00025667.bin
ac947009dc7dc153a75cf68d37a1b485e437a7194ce55c730e40b11e9d253247		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25667 15016 bytes
font_02_sfnt_off00028587.bin
b1eebb9c39e47ca5840de8b5acdd93d1ddb659d3b7ac357e9d40d02385366bc1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28587 14532 bytes
font_03_sfnt_off0002b073.bin
b35e03145662e189b1bfccc4f48d8fe45b18d817216ab4865d2c66943af7fde9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B073 6992 bytes
font_04_sfnt_off0002c4ae.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C4AE 6084 bytes
font_05_sfnt_off0002d443.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D443 3752 bytes

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