Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb786c1a784ca846…

MALICIOUS

PDF

187.5 KB Created: 2015-07-25 20:32:25 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 09854a164a06c8c9e6ddf5c82e43effc SHA-1: 104db8439ce2f31ee1d0af1f716a781183357323 SHA-256: eb786c1a784ca84642f6540a0458babcc8c01fb0f570f4f905a31f12dc4efe8e
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, indicating an attempt to lure the user to a harmful site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is sufficient evidence for the 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%BF%D1%80%D0%BE%D0%B4%D0%B8%D0%B4%D0%B6%D0%B8+%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%B2%D1%81%D0%B5+%D0%B0%D0%BB%D1%8C%D0%B1%D0%BE%D0%BC%D1%8B+%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://img0.liveinternet.ru/images/attach/c/5//4194/4194889_otvetuy_na_gia_po_russkomu_yazuyku_2015_9_klass_6_iyunya.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4197/4197823_skachat_igruy_v_formate_vxp.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4194/4194719_sashatanya_skachat_torrent_vse_serii.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002495f.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2495F 3556 bytes
font_01_sfnt_off000256e2.bin
ba1482caeef364d4c73caf5c70eb34f2ed3a8229238769dbf8d54a529c78830d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x256E2 14720 bytes
font_02_sfnt_off0002853e.bin
fbe4af72ea4b6832e02f3a94d39805fe74296d1f62d5d4f3c350b4dd983b7d89		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2853E 14468 bytes
font_03_sfnt_off0002afec.bin
c3668e5839dcea103a69724b44a4817d05e874ea487bb3b031aa3a7e7142972e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AFEC 7048 bytes
font_04_sfnt_off0002c451.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C451 6084 bytes
font_05_sfnt_off0002d3e6.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D3E6 3752 bytes

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