Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd4819e096f29d6f…

MALICIOUS

PDF

185.6 KB Created: 2015-08-08 11:37:16 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: cc60b0be6ffddf68a17d216686c5dd9e SHA-1: 86d770c41e7f2edce44e64a5763671e919e39973 SHA-256: bd4819e096f29d6f939f57c28f04de28c959f393d31ca2ce69bcecc8e02b4e72
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 embedded URL, http://botcraftman.ru/, is part of a chain likely designed to deliver a malicious payload or lead to a phishing page. The ML classifier also strongly indicated maliciousness. No scripts were extracted, and the document body was truncated, limiting further analysis of the specific lure.

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=battlefield+3+multiplayer+only+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4387/4387563_skachat_proigruyvatel_dlya_mov_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4385/4385302_konfiguracii_1s_82_skachat_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4387/4387560_vernut_ios_6_na_iphone_4.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023e6c.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23E6C 3556 bytes
font_01_sfnt_off00024bef.bin
f4b0eb156ee37a27c59c2e187bb7e447bea18fc0f1d2468bdc7e863dfb74f1db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24BEF 15172 bytes
font_02_sfnt_off00027a8c.bin
da116b4d3588b661e89891a05f4d372b8dd539c9b2ae1df69575be371977d3fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27A8C 14840 bytes
font_03_sfnt_off0002a664.bin
69b7bff386dc2f3a781812d24cd35656586904fd9a316f0df204ee345d9622a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A664 7568 bytes
font_04_sfnt_off0002bc9f.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BC9F 6084 bytes
font_05_sfnt_off0002cc34.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CC34 3752 bytes

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