Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccfcf110e143ae7d…

MALICIOUS

PDF

185.0 KB Created: 2015-07-23 20:19:21 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: f07457bb1ba21f347c9cf66d6345bda6 SHA-1: 89ab7259a5b91faf5d387bdd5036647f757bcece SHA-256: ccfcf110e143ae7d0d80fba1095d046cc1eeb8ed4bb416f3c34a0e338ec47d74
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical finding for a malicious redirector link. The ML classifier also assigned a high probability of maliciousness. The embedded URL points to botcraftman.ru, which is identified as a known malicious redirector. No scripts were extracted, but the presence of a malicious link indicates a likely attempt to redirect the user to a phishing or malware distribution site.

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-8518782-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8518782-0
  • 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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+windows+xp+2015&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184452_skachat_ze_kryu_cherez_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183201_lada_kalina_shema.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183247_antenna_fuksa_shema_i_opisanie.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a4e1.bin
8e21252dd3e915ed86f96f1edd054b4f3cba1f31cfc18bdc8d0da01f9c503cd9		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A4E1 7252 bytes
font_00_sfnt_off00023e08.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23E08 3556 bytes
font_01_sfnt_off00024b8b.bin
a29e8ca9462c4e4a49d077eb0e421b1b80e3514f1666e74e31742c5896a639cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24B8B 14560 bytes
font_02_sfnt_off00027930.bin
5f270fd0d70a020ee634d35d7a8dce95bc55ae16e11788b07890f309aa32b319		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27930 14780 bytes
font_04_sfnt_off0002ba1a.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BA1A 6084 bytes
font_05_sfnt_off0002c9af.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C9AF 3752 bytes

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