Malicious PDF — malware analysis report

Static analysis result for SHA-256 5471871d416a8d42…

MALICIOUS

PDF

186.9 KB Created: 2015-07-23 21:27:49 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: afefa516c63a18f11f61c34d20ecd304 SHA-1: 37d623b3b3e89f1803a6ffa7bcf4d3f69a0d43a9 SHA-256: 5471871d416a8d42ee86e79dff7441d523033b116b5da86e85dc7dffb3217028
98 Risk Score

Malware Insights

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

The PDF file contains an embedded JavaScript stream and a critical heuristic firing for a malicious redirector link. The link, http://botcraftman.ru/, is identified as a known malicious redirector. This suggests the document is designed to lure the user to a malicious website, likely for phishing or malware distribution. No specific malware family could be identified.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

Heuristics 3

  • 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 JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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%80%D0%B8%D0%BC%D0%B5%D1%80%D1%8B+%D0%B3%D0%BE%D1%82%D0%BE%D0%B2%D1%8B%D1%85+%D0%B1%D0%B8%D0%B7%D0%BD%D0%B5%D1%81+%D0%BF%D0%BB%D0%B0%D0%BD%D0%BE%D0%B2&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184550_programma_dlya_uskoreniya_igr_na_android.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183252_proekt_doma_yelbrus.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184989_skachat_igru_bratc_realnuye_devchonki_cherez_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024971.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24971 3556 bytes
font_01_sfnt_off000256f4.bin
7001c8f52d0770ac19179ed10e5c80890e74e37c0605b871630d918616944180		 pdf-font-stream PDF embedded font (sfnt) at offset 0x256F4 14124 bytes
font_02_sfnt_off0002835a.bin
0627de34e839737c03af0d9f30945bab194dadec018a1d0b90d3566f99dbb150		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2835A 14532 bytes
font_03_sfnt_off0002ae49.bin
0053a41341a508b7349c4102b19bdcff07cd2369dfd81f150a4b8ab1af665804		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AE49 6744 bytes
font_04_sfnt_off0002c1a3.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C1A3 6084 bytes
font_05_sfnt_off0002d138.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D138 3752 bytes

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