Malicious PDF — malware analysis report

Static analysis result for SHA-256 400f8f2923ceaec4…

MALICIOUS

PDF

186.6 KB Created: 2015-07-25 15:44:55 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: e5f1c5b022a40af6bf0cd849f515040b SHA-1: 238f2949a351f72fe249ece5f9c9b447e8b71844 SHA-256: 400f8f2923ceaec4d0d6a260eb88b65da624f42d4b196c521a702ec3f5535661
152 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 infrastructure, indicating an attempt to lure the user to a harmful site. The ClamAV detection as 'Pdf.Dropper.Agent' further supports its malicious nature. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-7429686-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7429686-0
  • 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%BF%D1%80%D0%BE%D0%B5%D0%BA%D1%82%D1%8B+%D0%B4%D0%BE%D0%BC%D0%BE%D0%B2+%D1%81+%D0%BC%D0%B0%D0%BD%D1%81%D0%B0%D1%80%D0%B4%D0%BE%D0%B9+%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&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191347_skachat_igru_maynkraft_besplatno_na_planshet_versiyu_095.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4203/4203096_baza_dannuyh_mvd_rossii_skachat_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4203/4203144_notuy_tango_serebryanaya_gitara.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024827.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24827 3556 bytes
font_01_sfnt_off000255aa.bin
2da7323fb36e3e277f35e23daf97890a7dc8ef7d854c864fcfa64f970a4501a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x255AA 14172 bytes
font_02_sfnt_off0002822e.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2822E 14468 bytes
font_03_sfnt_off0002ace0.bin
533007781bbd0e29fcf6ac1afc651c639c7d3bd15d90c575f4398f93e7e7c189		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ACE0 6904 bytes
font_04_sfnt_off0002c0ca.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C0CA 6084 bytes
font_05_sfnt_off0002d05f.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D05F 3752 bytes

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