Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d852aa40898c324…

MALICIOUS

PDF

184.8 KB Created: 2015-07-23 21:01:29 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: ac7184540a81f00afa55013284e1efaf SHA-1: 849e1c04baa3b2ea6b0313a0b3b925c24af29234 SHA-256: 4d852aa40898c3248bd03bc8ad2e726dd8bdce7d52da02c9cabfcf024fa5acc0
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL points to 'botcraftman.ru', which is associated with malicious redirector activity. This suggests the document's primary purpose is to lure the user to a harmful external resource.

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%BF%D1%83%D1%82%D0%B5%D0%B2%D0%BE%D0%B4%D0%B8%D1%82%D0%B5%D0%BB%D1%8C+%D0%BF%D0%BE+%D0%BA%D1%80%D1%8B%D0%BC%D1%83+%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://img0.liveinternet.ru/images/attach/c/5//4184/4184472_devushka_kotoraya_vzruyvala_vozdushnuye_zamki_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183193_lambreken_svoimi_rukami_shema_vuykroyki.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183181_kuryatnik_shema.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000240f1.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x240F1 3556 bytes
font_01_sfnt_off00024e74.bin
243ed8c03d4468e9b526c2e2cd63eccaa8e5746b327830f781ec19d4c24a39fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24E74 14428 bytes
font_02_sfnt_off00027b93.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27B93 14468 bytes
font_03_sfnt_off0002a645.bin
83bda485abed6037d4a44de25ee074c9a53501ebc24beeb19b7043565ffd3d6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A645 6708 bytes
font_04_sfnt_off0002b98e.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B98E 6084 bytes
font_05_sfnt_off0002c923.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C923 3752 bytes

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