Malicious PDF — malware analysis report

Static analysis result for SHA-256 38f0b36f331eb2af…

MALICIOUS

PDF

185.2 KB Created: 2015-07-24 14:25:15 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 96bcef88bd61ce148ca182ae4275c71b SHA-1: 8716c92a1f6fed35ebc0428dd52cb011fb33f3d4 SHA-256: 38f0b36f331eb2afbf02c0abd891fc59979854986feef9ad7e149ed8250b6900
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, botcraftman.ru. This heuristic, combined with the ML classifier's high confidence, indicates the document is designed to lead the user to a harmful site. The document body is heavily truncated and contains no actionable text, but the presence of the malicious URL 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=Viber+%D0%B4%D0%BB%D1%8F+java+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4186/4186643_scenariy_svatovstva_so_storonuy_nevestuy.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185700_skachat_serial_carstvo_2_sezon_2013_cherez_torrent_vse_serii.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192020_skachat_kontr_strayk_besplatno_na_kompyuter.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023f2d.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23F2D 3556 bytes
font_01_sfnt_off00024cb0.bin
49bc426127438867a3d83aad401544ab95ba9270174f589e7348c544be949a54		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24CB0 14688 bytes
font_02_sfnt_off00027a6f.bin
ea5f2012d168b999f72af81a50b96130dcb48d2bb9046c4e578beb1857356c2e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27A6F 14796 bytes
font_03_sfnt_off0002a639.bin
3f459cc442e7034d7097269ee6ad020b8756edfb912989de8e15c61d8dd05644		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A639 7164 bytes
font_04_sfnt_off0002baf2.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BAF2 6084 bytes
font_05_sfnt_off0002ca87.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CA87 3752 bytes

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