Malicious PDF — malware analysis report

Static analysis result for SHA-256 58d24f741615a90f…

MALICIOUS

PDF

185.1 KB Created: 2015-07-23 23:51:07 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 1b56185afc55c1b57213b2c17ca3b3f8 SHA-1: 911f2f7acfd4122c8db63285a2166bd2fb1f6d02 SHA-256: 58d24f741615a90f430b0f7cd7399e56c93f1b5bb68b1b26033d5574d46d9b76
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 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%BD%D0%B0%D0%B2%D0%B8%D1%82%D0%B5%D0%BB+750200+%D0%B4%D0%BB%D1%8F+%D0%B0%D0%BD%D0%B4%D1%80%D0%BE%D0%B8%D0%B4+%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://img1.liveinternet.ru/images/attach/c/5//4183/4183257_urok_proekt_po_russkomu_yazuyku.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185143_skachat_skayp_na_telefon_nokia_311.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185083_salli_bollivud_na_russkom_smotret_onlayn.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023f99.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23F99 3556 bytes
font_01_sfnt_off00024d1c.bin
7f1fd2c069b4c3da287aff226c10868ae9dd172325bf6cd79bcf00c88b9a442e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24D1C 14284 bytes
font_02_sfnt_off00027a32.bin
48811880569c7a2ad0ffda152e7976b82833274ed42da832ab31efbbb60702a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27A32 14688 bytes
font_03_sfnt_off0002a59a.bin
407bb3845460f9b74c9518c0c0269079e322f837d767a183b6937c7f08fc179a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A59A 7148 bytes
font_04_sfnt_off0002ba70.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BA70 6084 bytes
font_05_sfnt_off0002ca05.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CA05 3752 bytes

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