Malicious PDF — malware analysis report

Static analysis result for SHA-256 4185aeab82bb36e8…

MALICIOUS

PDF

185.2 KB Created: 2015-08-08 10:36:18 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: cc1e24a274647d747f1c97b379e0a8fb SHA-1: 6cdb9273d8bc73329bfbee394e0cdd25080580c9 SHA-256: 4185aeab82bb36e82a414b2733bed13dcf9cd5c1dc3d930f3693ab5f907eaeb9
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 malicious intent, likely serving as a lure to a phishing or malware download page. No scripts were extracted, and the document body was not parsable.

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=%D1%80%D0%B0%D0%B4%D0%B8%D0%BE%D0%BB%D1%8E%D0%B1%D0%B8%D1%82%D0%B5%D0%BB%D1%8C+2015+%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&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384092_tdu2_dlc2_v034_build_16_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384569_alena_sterligova_muzhem_bitaya_skachat_knigu.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4385/4385517_besedka_s_odnoskatnoy_kruyshey_foto.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024116.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24116 3556 bytes
font_01_sfnt_off00024e99.bin
c6e732298c3e086f8fcd860fe950127a749843c344a12027791ca33accdc5ee5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24E99 14524 bytes
font_02_sfnt_off00027be0.bin
ce1ae112dce8a9c3a7e0ec883f073f543a4f5354c8d78b97d357ac8d47b96e83		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27BE0 14640 bytes
font_03_sfnt_off0002a717.bin
c94663f5c1a43a03801db30d741121ef57e2cd470be6dda05cc1b6da1b52b85a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A717 6924 bytes
font_04_sfnt_off0002bb2b.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BB2B 6084 bytes
font_05_sfnt_off0002cac0.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CAC0 3752 bytes

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