Malicious PDF — malware analysis report

Static analysis result for SHA-256 90408a81b2d2cee0…

MALICIOUS

PDF

187.9 KB Created: 2015-08-08 11:32:51 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: bc5c50bb87cbf3b937a63c400d1f3a9a SHA-1: b4dbbeda00494e021739e2263043f110c341f193 SHA-256: 90408a81b2d2cee02032aba40b5dca45e3c27f2125f15d64d02d635c1eef421d
90 Risk Score

Malware Insights

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

The PDF was flagged by a critical heuristic for containing a link to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The embedded URL is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site. 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=%D0%BE%D0%B1%D1%81%D1%82%D0%BE%D1%8F%D1%82%D0%B5%D0%BB%D1%8C%D1%81%D1%82%D0%B2%D0%B0+%D0%B8+%D1%84%D0%B0%D0%BA%D1%82%D1%8B+%D0%BE%D0%B1%D1%8A%D0%B5%D0%B4%D0%B8%D0%BD%D0%B5%D0%BD%D0%B8%D1%8F+%D0%BF%D1%80%D1%83%D1%81%D1%81%D0%B8%D0%B8+%D1%81+%D0%B3%D0%B5%D1%80%D0%BC%D0%B0%D0%BD%D0%B8%D0%B5%D0%B9&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4387/4387297_fanfiki_po_feyri_tel_lyusi_i_sting.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4385/4385751_tekst_pesni_pro_lyubimuyu_devushku.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4385/4385302_konfiguracii_1s_82_skachat_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024a35.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24A35 3556 bytes
font_01_sfnt_off000257b8.bin
ea2aa4bcc410460c0dd69c8684ad375f81eb5d97d30cc500f56f8e18e4c4c5b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x257B8 14512 bytes
font_02_sfnt_off0002850d.bin
9f754d6c018624d6f2de5fd6bca857add29d68ef01d3cd21edf3ffe06ad8aea4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2850D 14600 bytes
font_03_sfnt_off0002aff5.bin
30500f5c8287a9ce3c4c80eda2492e3f13be4b1401f9b375c24383eec5b3ddd9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AFF5 7464 bytes
font_04_sfnt_off0002c5c7.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C5C7 6084 bytes
font_05_sfnt_off0002d55c.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D55C 3752 bytes

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