Malicious PDF — malware analysis report

Static analysis result for SHA-256 529c9edc680b495e…

MALICIOUS

PDF

184.7 KB Created: 2015-07-25 00:11:15 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 1bca54cfa3df96e82652ac10fc606ee5 SHA-1: aea58482590c4c60aabaadbd542747877ca915d0 SHA-256: 529c9edc680b495eca6f28557c51791041c5443c4534b3b526e08aafe54e29eb
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 linking to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL points to botcraftman.ru, which is identified as a malicious redirector. No scripts were extracted, but the presence of the malicious link strongly suggests a phishing or malware delivery attempt.

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%BC%D1%83%D0%B7%D1%8B%D0%BA%D0%B0+%D0%B8%D0%B7+%D0%B3%D0%B5%D0%B9%D0%BC%D0%B5%D1%80%D0%BE%D0%B2+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191228_interesnuye_zadaniya_po_angliyskomu_yazuyku_dlya_2_klassa.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191991_mount_and_blade_rus_13_vek_koduy.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192835_vorovayki_skachat_torrent_vse_albomuy.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023ea6.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23EA6 3556 bytes
font_01_sfnt_off00024c29.bin
2cb93aea77b67c93455a3c3f8f42c330a8f3fb47cf1159feb2609c1305da9b03		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24C29 15144 bytes
font_02_sfnt_off00027af3.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27AF3 14468 bytes
font_03_sfnt_off0002a5a5.bin
104c93dd1e75ec0b5da18f18674b8297b4c0baef59c1b1acae5e23cd2f62befd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A5A5 6792 bytes
font_04_sfnt_off0002b927.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B927 6084 bytes
font_05_sfnt_off0002c8bc.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C8BC 3752 bytes

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