Malicious PDF — malware analysis report

Static analysis result for SHA-256 544324970f193d79…

MALICIOUS

PDF

185.2 KB Created: 2015-07-29 20:54:00 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 06851df7f7916432a05d70164dd41ab4 SHA-1: 401ca459b3cc94b59a23e63adee006ec20d0ed80 SHA-256: 544324970f193d796c8702c115ec2a5772cd97cea325de32fe040957fd3cc93a
90 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating a malicious redirector link to botcraftman.ru. This suggests the document is designed to lure the user to a malicious website. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted from this sample, but the embedded URL is the primary indicator of malicious intent.

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=%D0%A2%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0+%D0%BF%D0%B5%D1%80%D0%B5%D1%81%D1%87%D0%B5%D1%82%D0%B0+%D0%BC%D0%B5%D1%82%D0%B0%D0%BB%D0%BB%D0%B0+%D0%B8%D0%B7+%D1%82%D0%BE%D0%BD%D0%BD+%D0%B2+%D0%BC%D0%B5%D1%82%D1%80%D1%8B&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4229/4229929_testuy_po_psihologii_s_otvetami_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4193/4193527_zolotoy_led_4_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4216/4216228_skachat_besplatno_videoyeffektuy.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000241a5.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x241A5 3556 bytes
font_01_sfnt_off00024f28.bin
e297e79b5d91b4dbd4c35b428689c758b3fceb049f4ac92e1c1f7101f088fad8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24F28 14504 bytes
font_02_sfnt_off00027cd6.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27CD6 14468 bytes
font_03_sfnt_off0002a788.bin
17d8612c5087233dd45dbd4ff2534ecfc878b8dd534ca3543e6be94b7c303940		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A788 6764 bytes
font_04_sfnt_off0002baf6.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BAF6 6084 bytes
font_05_sfnt_off0002ca8b.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CA8B 3752 bytes

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