Malicious PDF — malware analysis report

Static analysis result for SHA-256 255bf4553edf56cf…

MALICIOUS

PDF

185.9 KB Created: 2015-07-23 20:04:30 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: b5550661c5fb4dda0e7612d854a19678 SHA-1: 1714d4a50a64dc328b98db6a43753baff85c313d SHA-256: 255bf4553edf56cf2e0acc85971b3daad9961bab75a28c14a2cf83170b691e45
90 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, botcraftman.ru. This heuristic, combined with the ML classifier's high confidence score, indicates the document is designed to lead users to a malicious site. No scripts were extracted, but the presence of a malicious URL is sufficient evidence for a phishing or malware distribution attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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%BA%D0%B0%D0%BB%D0%BB%D0%B0%D0%BD%D0%B5%D1%82%D0%B8%D0%BA%D0%B0+%D1%81+%D0%B5%D0%BA%D0%B0%D1%82%D0%B5%D1%80%D0%B8%D0%BD%D0%BE%D0%B9+%D1%80%D1%8B%D0%BA%D0%BE%D0%B2%D0%BE%D0%B9+%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://img1.liveinternet.ru/images/attach/c/5//4183/4183190_lazer_iz_dvd_privoda_svoimi_rukami_shema.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183245_derevyannuyy_dom_proekt.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184333_krossvord_po_fizike_na_temu_magnitnoe_pole_s_otvetami.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002449c.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2449C 3556 bytes
font_01_sfnt_off0002521f.bin
145b6ef9da9da814e2d5ecaba043c5d68dec340ab51fa2540ffc7edaf21fdbd9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2521F 14272 bytes
font_02_sfnt_off00027f3a.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27F3A 14468 bytes
font_03_sfnt_off0002a9ec.bin
3601bff964995d69d7b60c84d399e4f2ed1ff4c898e537d54d8b632738ead85a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A9EC 6888 bytes
font_04_sfnt_off0002bd9f.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BD9F 6084 bytes
font_05_sfnt_off0002cd34.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CD34 3752 bytes

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