Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab523f8ea55348bd…

MALICIOUS

PDF

185.0 KB Created: 2015-07-24 03:38:03 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 1b11dad2603cd9430974389398c9be4f SHA-1: 13009adbe3c01c7ce0314e0905d5a59fdd873f67 SHA-256: ab523f8ea55348bd9728a5160b3a85e1ad2b68367de757a3f83d5ce862279606
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 alert for a malicious redirector link and a machine learning classifier. The embedded URL points to 'botcraftman.ru', which is identified as a known malicious redirector. This suggests the document is designed to lure users to a malicious site, likely for phishing or to download further malware.

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-7494620-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7494620-0
  • 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=%D0%A1%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+microsoft+power+point&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4186/4186647_egye_po_himii_2015_401_variant_probnuyy.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187385_skachat_barbi_pokaz_mod_2_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184999_skachat_sony_vegas_pro_12_russkaya_versiya_c_klyuchom.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a647.bin
5fc5c90200b849d0e060fcfbb6aec2001e70864f9cb68c31cbec6f7eb6d31fde		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A647 6904 bytes
font_00_sfnt_off00023e1a.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23E1A 3556 bytes
font_01_sfnt_off00024b9d.bin
81aa24c9db5c0ed45904ec659a78141c13a2eb8ddaa10554a5188f160cb29b23		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24B9D 15100 bytes
font_02_sfnt_off00027a33.bin
84a0e7522553358b48d9325df5ebd28a224f2cde5e1e919f624b1cbfb2e51219		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27A33 14916 bytes
font_04_sfnt_off0002ba3f.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BA3F 6084 bytes
font_05_sfnt_off0002c9d4.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C9D4 3752 bytes

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