Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e1d0b59f4c3949c…

MALICIOUS

PDF

185.2 KB Created: 2015-08-08 15:24:28 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 263226b7d78e2609d37cc90ff5b65f5c SHA-1: 2d816bd295a65b16082c8f02f065995f35b72de5 SHA-256: 8e1d0b59f4c3949c1748302968b7941f08f7895886c9a340a18aef35a7fa4dc3
92 Risk Score

Malware Insights

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

The PDF 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 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%B2%D1%8B%D0%BA%D1%83%D0%BF+%D0%BD%D0%B5%D0%B2%D0%B5%D1%81%D1%82%D1%8B+%D1%81%D1%86%D0%B5%D0%BD%D0%B0%D1%80%D0%B8%D0%B9+%D0%B2+%D0%BF%D1%80%D0%BE%D0%B7%D0%B5&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384893_skachat_starforge_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4385/4385712_disk_karaoke_versiya_10_3000_pesen_dvd_lg_2004gmuzuyka.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4389/4389735_rukovodstvo_po_remontu_i_yekspluatacii_nissan_patrol_y61.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024184.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24184 3556 bytes
font_01_sfnt_off00024f07.bin
c2c788aa4397ee02eeafedb2309b0e12e84aa972f0adbcac7e67009d288b7ccd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24F07 14756 bytes
font_02_sfnt_off00027cf8.bin
ed79233d174a9095ca7a279db0a15312d4def8e546554b770a0f1fe977ecc440		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27CF8 14680 bytes
font_03_sfnt_off0002a7bf.bin
a1ba2bb0ad81f0500a781066cb209641d350a7aa288f607204d2b469bee4dad1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A7BF 6700 bytes
font_04_sfnt_off0002bad6.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BAD6 6084 bytes
font_05_sfnt_off0002ca6b.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CA6B 3752 bytes

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