Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a53b4e2cb1c1253…

MALICIOUS

PDF

184.3 KB Created: 2015-07-23 21:25:38 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 19b1dc850beff00cec293b3b37912b8b SHA-1: e1d17f8e37f0325ed83912a0f0dc85951422d0ab SHA-256: 2a53b4e2cb1c125377bf7cc61e707e7ca9a600b4e684090c3ae059a07f6a8928
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a direct link to a known malicious redirector infrastructure. This suggests the document is designed to lure users to a harmful website. No scripts were extracted, and the document body was not parsable, 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=finereader+80+%D0%BA%D0%BE%D0%B4+%D0%B0%D0%BA%D1%82%D0%B8%D0%B2%D0%B0%D1%86%D0%B8%D0%B8&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184910_skachat_fifa_10_ukrainskaya_liga_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184719_obrazec_zapolneniya_zayavleniya_na_zagranpasport.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184658_skachat_pesnyu_chernuyy_pistolet.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023e4d.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23E4D 3556 bytes
font_01_sfnt_off00024bd0.bin
a30c3f135a66c1847a53915aba3803d926accc280cfd0424140490474f7d7240		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24BD0 14680 bytes
font_02_sfnt_off0002792d.bin
4f8ac896124d109e389c61730bbec5e7f01b897c72a5015b91f48b6d8cbfe06f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2792D 14516 bytes
font_03_sfnt_off0002a410.bin
582dd36d9cc537b4527357bb1f67df73eb4baf92288bc7dae2424a0262c99bd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A410 6800 bytes
font_04_sfnt_off0002b795.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B795 6084 bytes
font_05_sfnt_off0002c72a.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C72A 3752 bytes

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