Malicious PDF — malware analysis report

Static analysis result for SHA-256 355bcca5a82b25b3…

MALICIOUS

PDF

185.6 KB Created: 2015-07-24 11:50:11 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: db1ffc3a75cd636656f4d8c0800c37c9 SHA-1: ee0df715bd71ed5daf8cc7e4a35c9d6a581939e2 SHA-256: 355bcca5a82b25b3ca355cdbb31f030bccdb2bc15b59c964165230e74735c6bd
90 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a link to known malicious redirector infrastructure. The primary IOC is the malicious URL http://botcraftman.ru/, which is likely used to lure the user to a malicious site. The file type and the presence of embedded links suggest 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%BD%D0%BE%D0%B2%D0%B0%D1%8F+%D0%BF%D1%81%D0%B8%D1%85%D0%BE%D0%BA%D0%B8%D0%B1%D0%B5%D1%80%D0%BD%D0%B5%D1%82%D0%B8%D0%BA%D0%B0+%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//4187/4187857_zadaniya_po_matematike_dlya_2_klassa.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184433_kameru_s_pauzoy_na_android_s_yeffektami.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184878_obrazec_blanka_1_po_russkomu_yazuyku_ogye_2015.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002432c.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2432C 3556 bytes
font_01_sfnt_off000250af.bin
9ec9f7bfcb894a410bcb01cca190521a4e461b84351d0f3b2e184d705ddf4452		 pdf-font-stream PDF embedded font (sfnt) at offset 0x250AF 14600 bytes
font_02_sfnt_off00027e85.bin
c947384ca9da6b338a802e2d79393af65bbc7ec579a56be2392c779918975b81		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27E85 14532 bytes
font_03_sfnt_off0002a978.bin
98e3ea656be189107ef9b04274d03c2a0a8c2f7a7260c6b9a241c6f76e71ff64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A978 6700 bytes
font_04_sfnt_off0002bcad.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BCAD 6084 bytes
font_05_sfnt_off0002cc42.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CC42 3752 bytes

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