Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff74fa5b7cfcfef2…

MALICIOUS

PDF

187.4 KB Created: 2015-07-25 02:47:31 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: d39d02d91d5dd11bab061b16307ccf8a SHA-1: 530daef9edea7f5b7a15669c410b29d2b1476bb0 SHA-256: ff74fa5b7cfcfef23918fd2ce860272a3218b6c458f0fc42fa16c1cc59a0ea02
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 strongly indicated maliciousness. The embedded URL points to botcraftman.ru, which is associated with malicious redirectors. No scripts were extracted, but the presence of a malicious link is sufficient to indicate a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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%A0%D0%B5%D1%88%D0%B5%D0%B1%D0%BD%D0%B8%D0%BA+%D0%BA%D1%83%D0%B7%D0%BD%D0%B5%D1%86%D0%BE%D0%B2%D0%B0+%D0%BF%D0%BE+%D0%B2%D1%8B%D1%81%D1%88%D0%B5%D0%B9+%D0%BC%D0%B0%D1%82%D0%B5%D0%BC%D0%B0%D1%82%D0%B8%D0%BA%D0%B5+%D0%BB%D0%B8%D0%BD%D0%B5%D0%B9%D0%BD%D0%B0%D1%8F+%D0%B0%D0%BB%D0%B3%D0%B5%D0%B1%D1%80%D0%B0&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4195/4195151_ter32hw_dll_skachat_besplatno_bez_registracii.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191442_disk_vosstanovleniya_windows_7_64_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188314_adobe_after_effects_cs6_skachat_torrent_32bit.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000247c7.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x247C7 3556 bytes
font_01_sfnt_off0002554a.bin
43f254ef23086fb137c505b950313454b4164e540e00c8fe46ddb52307ebe0f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2554A 15132 bytes
font_02_sfnt_off000283c9.bin
d9775475238cab7937fa4e35d65fbe93a357e8a9e242d68b4cc886ecd1dec298		 pdf-font-stream PDF embedded font (sfnt) at offset 0x283C9 14520 bytes
font_03_sfnt_off0002ae98.bin
b39aff513a8d99267f510a2d5a87d9c95f1b7571521e34f418dd1bbb2a3b0008		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AE98 7228 bytes
font_04_sfnt_off0002c3a1.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C3A1 6084 bytes
font_05_sfnt_off0002d336.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D336 3752 bytes

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