Malicious PDF — malware analysis report

Static analysis result for SHA-256 16b2bbb6662fb245…

MALICIOUS

PDF

185.6 KB Created: 2015-07-24 12:40:05 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: d8a45fc85fb4c4d143a06799a20a87f7 SHA-1: 9bd11a8415b2351799ea7f1554697ffcb9a819af SHA-256: 16b2bbb6662fb245c65a2bbc2997bda5c4436ea7290c2b6241c4461f649d5d6d
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by multiple heuristics as malicious, including a critical alert for a link to known malicious redirector infrastructure. The embedded URL `http://botcraftman.ru/...` is identified as a malicious redirector, suggesting the document's primary purpose is to lead the user to a harmful site. No scripts were extracted, but the presence of a malicious link indicates a likely attempt to deliver a second-stage payload or phish the user.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-7521691-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7521691-0
  • 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%A1%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B8%D0%BD%D1%82%D1%80%D0%BE+%D0%B4%D0%BB%D1%8F+%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE+%D0%BC%D0%B0%D0%B9%D0%BD%D0%BA%D1%80%D0%B0%D1%84%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4190/4190811_skachat_scr_free_na_android.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188570_skachat_film_zharkoe_leto_v_kabule_cherez_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191226_pro100_oshibka_dostupa_k_apparatnomu_klyuchu.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_off0002430c.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2430C 3556 bytes
font_01_sfnt_off0002508f.bin
b93da61657b360d2446adf3fd800d3b23252e3a8d1a0389b4e3aa055f6a54b00		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2508F 14524 bytes
font_02_sfnt_off00027e09.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27E09 14468 bytes
font_03_sfnt_off0002a8bb.bin
685055bb832d7f0debd03134d23c0eca7f0e3d347bab8c2efd4c37bda8d3c9db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A8BB 6896 bytes
font_04_sfnt_off0002bca7.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BCA7 6084 bytes
font_05_sfnt_off0002cc3c.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CC3C 3752 bytes

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