Malicious PDF — malware analysis report

Static analysis result for SHA-256 a990439b24a0cbb3…

MALICIOUS

PDF

187.6 KB Created: 2015-07-24 00:18:32 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: f43b0438657a79d3aece22afaa4f7ae5 SHA-1: 13314864af1625921655d491dc9916a1462fe0ce SHA-256: a990439b24a0cbb31aca64a49c022c890207ba99e937f3d3778339dd6d110570
150 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'http://botcraftman.ru/'. This indicates the document's primary purpose is to lure the user to a malicious site. The ML classifier also flagged the PDF with high confidence. No scripts were extracted, but the presence of the malicious URL strongly suggests a phishing or malware delivery attempt.

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-7494595-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7494595-0
  • 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%82%D1%80%D1%83%D0%B4%D0%BE%D0%B2%D0%BE%D0%B5+%D0%BF%D1%80%D0%B0%D0%B2%D0%BE+%D0%B2+%D1%81%D1%85%D0%B5%D0%BC%D0%B0%D1%85+%D0%B8+%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D1%85+%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//4185/4185659_diana_va_bahrom_yoqubov.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185640_skachat_albomuy_nagano_cherez_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185684_skachat_brauzer_dlya_samsung_smart_tv.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000247db.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x247DB 3556 bytes
font_01_sfnt_off0002555e.bin
501a4c02e2b2c0d74a208bf983349e497192a8ae6b31faca0330562ea89313dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2555E 15588 bytes
font_02_sfnt_off0002856c.bin
858de1ea0edee6589051d6c5805376be02fce034b392ea3476abe13984ffa707		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2856C 14532 bytes
font_03_sfnt_off0002b059.bin
b5da846abc65744991ee18de7dc37b15d035c459aeadd245a23e1e5794b6158c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B059 6940 bytes
font_04_sfnt_off0002c480.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C480 6084 bytes
font_05_sfnt_off0002d415.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D415 3752 bytes

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