Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ed2d254f6bdfed4…

MALICIOUS

PDF

185.1 KB Created: 2015-07-23 20:39:25 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 2af540a52c3c919f0e3512b121700802 SHA-1: 1d728629d2db816cc07db60735a3131970946a23 SHA-256: 8ed2d254f6bdfed42769c7b07957c76eb3b3878d795630677dbb3bed93272f96
92 Risk Score

Malware Insights

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

The PDF was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL points to botcraftman.ru, which is associated with malicious activity. No scripts were extracted, but the presence of a malicious link strongly suggests a phishing or malware delivery 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%B0%D0%BB%D1%8C%D0%B1%D0%BE%D0%BC+%D0%B0%D0%BB%D0%B5%D0%BA%D1%81%D0%B5%D1%8F+%D0%B1%D1%80%D1%8F%D0%BD%D1%86%D0%B5%D0%B2%D0%B0+%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://img1.liveinternet.ru/images/attach/c/5//4183/4183241_shema_dvigatelya_izh_planeta_5.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184457_spravka_o_srednem_zarabotke_dlya_centra_zanyatosti_blank_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183185_lada_kalina_shema_yelektricheskaya.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024105.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24105 3556 bytes
font_01_sfnt_off00024e88.bin
37751df51ec95f4d7b3e7867f09cd4cb6ef2b2d43b834f0bcdd5ca6b1521b4c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24E88 14616 bytes
font_02_sfnt_off00027bc6.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27BC6 14468 bytes
font_03_sfnt_off0002a678.bin
6c9f23077b5d9069d73a737ee43970d3cad4bbe3a379f0226ab55c289ce5ccc4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A678 6948 bytes
font_04_sfnt_off0002ba93.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BA93 6084 bytes
font_05_sfnt_off0002ca28.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CA28 3752 bytes

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