Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a9001491bfb0c4b…

MALICIOUS

PDF

186.3 KB Created: 2015-07-24 03:49:07 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: f5b22dba4119bafe3288f11b89e9c2d2 SHA-1: ae9c77654e33346efdef43ff3dab0ac23283463d SHA-256: 1a9001491bfb0c4b01beb23184efc054f44359cb69730132129bbea64cc532fd
90 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, http://botcraftman.ru/, which is designed to lure users into downloading potentially harmful content. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the embedded URL is sufficient evidence of a malicious redirection 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=aide+pdf+to+dxf+converter+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D0%BD%D0%B0+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%BE%D0%BC&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185698_skachat_spanch_bob_5_sezon_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184457_spravka_o_srednem_zarabotke_dlya_centra_zanyatosti_blank_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187077_infamous_second_son_na_pc_skachat_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000242ad.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x242AD 3556 bytes
font_01_sfnt_off00025030.bin
ee83989afe8d32e3a0f0249a8dc61b50e197095c1d1ad5eb5be895adeebfa5c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25030 14520 bytes
font_02_sfnt_off00027d24.bin
3206d9f8a860d6724faa005fced633053e4d6c87a5791d5cdaf227c7b0af7d21		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27D24 14792 bytes
font_03_sfnt_off0002a8f6.bin
2fe9cce97c4678b2a15f8b1595645158bc69c57f92869b92404dbed58c9d73e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A8F6 7592 bytes
font_04_sfnt_off0002bf58.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF58 6084 bytes
font_05_sfnt_off0002ceed.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CEED 3752 bytes

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