Malicious PDF — malware analysis report

Static analysis result for SHA-256 58be2ba080966234…

MALICIOUS

PDF

187.5 KB Created: 2015-07-26 06:17:45 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: d5e538c0eff012a24dddc4a78862d05c SHA-1: 3e50bdd6b84ea11fa4744e169a60f9deecba21b7 SHA-256: 58be2ba0809662344b0a0a9dc330a8ed2b0874f2bc70fd89dfa3f83554038100
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 ML classifier also strongly indicated maliciousness. The embedded URL points to botcraftman.ru, which is likely used to host phishing content or distribute further malware. No scripts were extracted, but the presence of a malicious link is sufficient evidence of malicious intent.

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=%D0%B8%D1%82%D0%BE%D0%B3%D0%BE%D0%B2%D1%8B%D0%B9+%D1%82%D0%B5%D1%81%D1%82+%D0%BF%D0%BE+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%BE%D0%BC%D1%83+%D1%8F%D0%B7%D1%8B%D0%BA%D1%83+7+%D0%BA%D0%BB%D0%B0%D1%81%D1%81+%D1%81+%D0%BE%D1%82%D0%B2%D0%B5%D1%82%D0%B0%D0%BC%D0%B8+2015&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4210/4210122_skachat_torrent_igruy_sibirskiy_konflikt_voyna_mirov.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4205/4205365_bogdan_sushinskiy_vse_knigi.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4197/4197322_skachat_programmu_dlya_ispravleniya_oshibok_windows_7.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024976.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24976 3556 bytes
font_01_sfnt_off000256f9.bin
6a65fb8ff075653a183095cbc7b737a9e162159818bc33cf124e4200d1a38acf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x256F9 14352 bytes
font_02_sfnt_off000283dc.bin
a3b9fb50c9fe5a0afc46b074a91f471a104f402d7b371515a93c36d0171beb26		 pdf-font-stream PDF embedded font (sfnt) at offset 0x283DC 14688 bytes
font_03_sfnt_off0002af4a.bin
7a301332e61496b15e94910ad45307f43b07d9efdb2b8246d2474a9a6ae0eea6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AF4A 7204 bytes
font_04_sfnt_off0002c45a.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C45A 6084 bytes
font_05_sfnt_off0002d3ef.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D3EF 3752 bytes

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