Malicious PDF — malware analysis report

Static analysis result for SHA-256 561c9e8c4b8d0b80…

MALICIOUS

PDF

184.9 KB Created: 2015-07-24 11:39:15 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 168958d876ff3afc936ef259a9c268e5 SHA-1: 5ce6fdd07898abad886b9c0a74743952e8c7f17b SHA-256: 561c9e8c4b8d0b8022bd07c5e87b9685b22b5295f385a172ac82cca80d184917
90 Risk Score

Malware Insights

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

The PDF was flagged by a malicious redirector heuristic, indicating it contains a link to known malicious infrastructure. The ML classifier also strongly suggested maliciousness. The embedded URL points to 'botcraftman.ru', which is identified as a malicious redirector. No scripts were extracted, and the document body was not parsable text, so the primary indicator is the malicious link.

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B3%D0%BE%D1%82%D0%BE%D0%B2%D1%8B%D0%B5+%D0%B8%D0%BD%D1%82%D1%80%D0%BE+%D0%B4%D0%BB%D1%8F+cinema+4d&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191023_skachat_igru_wwe_13_cherez_torrent_na_pc.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184959_viktor_suvorov_oblom_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187115_skachat_vindovs_8_cherez_torrent_64_bit_avtoustanovka.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023ee3.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23EE3 3556 bytes
font_01_sfnt_off00024c66.bin
218a0256ad0e558161a5a35f40742a4041857e7f5c98b0c3a5c819c73fa1f38c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24C66 14200 bytes
font_02_sfnt_off000278b3.bin
ea7552b69d36f51480ec620969897866675c701fcc4b28d24f8f26f6c1a4c73c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x278B3 14632 bytes
font_03_sfnt_off0002a3d5.bin
92f120acf5202d78b6fa8fb80ad976ea34b677ed5268bc7a61c9cfaac0f010b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A3D5 7496 bytes
font_04_sfnt_off0002b9cb.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B9CB 6084 bytes
font_05_sfnt_off0002c960.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C960 3752 bytes

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