Malicious PDF — malware analysis report

Static analysis result for SHA-256 813b053c53d54064…

MALICIOUS

PDF

185.9 KB Created: 2015-07-23 20:19:33 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: d1843a0f2d75a3c74cb7df4cdf372c87 SHA-1: fd33554be7f23fc687caef0dfcf1eda080ec8f2b SHA-256: 813b053c53d540641e03114113113cb1e36d137cd81b11d388fce0558429f9f0
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged as malicious by an ML classifier and contains a critical heuristic indicating a redirector link to a known malicious domain. The embedded URL, http://botcraftman.ru/, is likely intended to lead the user to a phishing or malware distribution site. No scripts were extracted, but the presence of a malicious URL strongly suggests a phishing or social engineering attack.

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%D1%81%D0%B5+%D0%B0%D0%BB%D1%8C%D0%B1%D0%BE%D0%BC%D1%8B+atb+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%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://img0.liveinternet.ru/images/attach/c/5//4184/4184326_hp_laserjet_p1102_drayver_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184376_skachat_besplatno_masha_i_medved_vse_serii_odnim_faylom.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184503_skachat_java_dlya_maynkraft_152.pdf
    • http://www.microsoft.com/typography/fonts/
    • http://www.microsoft.com/typography/fonts/You

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024257.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24257 3556 bytes
font_01_sfnt_off00024fda.bin
cc86b5612b6723710842d4f7b282a42ffd017cc0fc2a2a43bb535922c8f9636e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24FDA 14636 bytes
font_02_sfnt_off00027d62.bin
f6672218348be251e1b418895dade30d7c01d4d32d5560a2bc85a0fd69757727		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27D62 14712 bytes
font_03_sfnt_off0002a8d5.bin
707b789bb8791bb9787e81d58735be573d630e11317197d5e5567b6dd0dd263a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A8D5 7204 bytes
font_04_sfnt_off0002bddb.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BDDB 6084 bytes
font_05_sfnt_off0002cd70.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CD70 3752 bytes

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