Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad39a2ff44c5349e…

MALICIOUS

PDF

185.9 KB Created: 2015-08-08 12:18:28 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: bd57ef1c5afc73da68b7eaeb43fdac4b SHA-1: f74d1fce46bb60cf05247ffd64e376542d5af78e SHA-256: ad39a2ff44c5349eeb6ef4f44f783d877429c7eff590fcef8d026e0efd4a0f14
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link

The PDF was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL http://botcraftman.ru/ is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware download page. No scripts were extracted, and the document body was not parsable.

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%BA%D1%84%D0%B3+%D0%BD%D0%B0+%D1%81%D1%82%D1%80%D0%B5%D0%BB%D1%8C%D0%B1%D1%83+%D0%B1%D0%B5%D0%B7+%D1%80%D0%B0%D0%B7%D0%B1%D1%80%D0%BE%D1%81%D0%B0&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4388/4388649_skachat_launcher_maynkraft_mix_server.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4387/4387631_vaenga_elena_shanson_skachat_mr3.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384849_skachat_mozilla_firefox_portable_rus.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024391.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24391 3556 bytes
font_01_sfnt_off00025114.bin
db93f391c919736a0108392221ac25d15ac310e5f6ab7127445533e0136c5a67		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25114 15052 bytes
font_02_sfnt_off00027f6a.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27F6A 14468 bytes
font_03_sfnt_off0002aa1c.bin
2871ff4eccf07aa1bb0fb70e630697abb6929baf2fedccaccb90ba1f023add40		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AA1C 6804 bytes
font_04_sfnt_off0002bdd2.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BDD2 6084 bytes
font_05_sfnt_off0002cd67.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CD67 3752 bytes

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