Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb39520303f81401…

MALICIOUS

PDF

186.8 KB Created: 2015-07-26 12:22:03 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 300ddfc7d6337c340603118104222889 SHA-1: c2b0ed519de85c27c199ffb8adc366c2703434dc SHA-256: eb39520303f81401c8e0c12a41cd6a247439bc6339c32b955bdb91e62e8e99e3
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for containing a link to a known malicious redirector. The ML classifier also assigned a high probability of maliciousness. The embedded URL points to botcraftman.ru, which is associated with malicious redirector infrastructure. No scripts were extracted, and the document body was truncated and uninformative.

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%80%D0%B0%D0%BC%D0%BA%D0%B8+%D0%B4%D0%BB%D1%8F+%D0%BF%D1%80%D0%B5%D0%B7%D0%B5%D0%BD%D1%82%D0%B0%D1%86%D0%B8%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//4211/4211483_skachat_brauzer_na_nokia_5228.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4190/4190946_garrys_mod_13_skachat_torrent_repack_mehaniki.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4201/4201180_akt_zamera_temperaturuy_v_pomeschenii_obrazec.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002469d.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2469D 3556 bytes
font_01_sfnt_off00025420.bin
8b1529b2b6d6e416c6feff17a001272e9f68ef0f2480d38ad683e91e745bf01f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25420 14800 bytes
font_02_sfnt_off00028249.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28249 14468 bytes
font_03_sfnt_off0002acfb.bin
28f51e1ee90c30fec1fdee52239ec3025ac46d8589c5d6076f43575b75284859		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ACFB 7072 bytes
font_04_sfnt_off0002c173.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C173 6084 bytes
font_05_sfnt_off0002d108.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D108 3752 bytes

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