Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7e45930934f0d8c…

MALICIOUS

PDF

187.3 KB Created: 2015-08-05 13:53:01 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: fde78e31cd90bb9c1580a33407686f92 SHA-1: 562354679e36ba9701547cca7eae298757774a34 SHA-256: b7e45930934f0d8c925ffa6cb2b8d7feddb753e1349bc3c540e17896acaa6faf
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL http://botcraftman.ru/... is the primary indicator of compromise, likely serving as a lure to a phishing or malware distribution site. No scripts were extracted, and the document body was not sufficiently readable to determine a 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%BA%D0%BD%D0%B8%D0%B3%D0%B8+fb2+%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+%D1%81+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82%D0%B0&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304486_servera_maynkraft_181_piratka.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304625_skachat_igru_marti_zheleznuyy_malchik_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304794_diagnosticheskaya_rabota_po_matematike_10_klass_21_maya_2015.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000248b5.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x248B5 3556 bytes
font_01_sfnt_off00025638.bin
71d85339a24edf0e9aa4bf1e608284430b2aee6824d147ac52c956f86c438e81		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25638 14652 bytes
font_02_sfnt_off0002840f.bin
b69d0cbf71cb8757e9dfec7eb9bb90d0ee34f6eb90d2f913498bf23f8a138b23		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2840F 14696 bytes
font_03_sfnt_off0002af7d.bin
573fa2d280e48e6ea484a0ebd124cf55855f3e31b4778764e0eb40cc710b107a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AF7D 6864 bytes
font_04_sfnt_off0002c355.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C355 6084 bytes
font_05_sfnt_off0002d2ea.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D2EA 3752 bytes

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