Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e37472c16e5ae5d…

MALICIOUS

PDF

184.7 KB Created: 2015-07-23 20:12:27 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 08ac6e129150a687d5eefe848603d2cd SHA-1: c336a92296bcf6c90bee13884fd45074e7cf930f SHA-256: 1e37472c16e5ae5d750e72efbebc4da1fda97eaa79733f280fcf6ea95097ab9d
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 assigned a high probability of 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 and unreadable.

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%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BF%D0%B0%D0%BD%D0%B5%D0%BB%D1%8C+%D0%B2%D0%B2%D0%BE%D0%B4%D0%B0+%D0%BF%D0%BB%D0%B0%D0%BD%D1%88%D0%B5%D1%82%D0%BD%D0%BE%D0%B3%D0%BE+%D0%BF%D0%BA&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184313_supersu_ne_smog_ustanovit_binarnuyy_fayl_su.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183203_kursovoy_proekt_torgovuyy_centr.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184357_speed_art_skachat_programmu_dlya_risovaniya.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024181.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24181 3556 bytes
font_01_sfnt_off00024f04.bin
bab57b53af8d5802b338c3e3426384ef968067dffe9c7ad212c75f7597691a90		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24F04 14432 bytes
font_02_sfnt_off00027be6.bin
8c5e5bc4674cee60ec6c1619e60533ff44be00efca6b5f228c587d2f19a61a12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27BE6 14520 bytes
font_03_sfnt_off0002a6b5.bin
c68e0b6cfeda9191eea3a028c5cc0a489d71d59e6676300e54a4a25d30248df5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A6B5 6392 bytes
font_04_sfnt_off0002b8d1.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B8D1 6084 bytes
font_05_sfnt_off0002c866.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C866 3752 bytes

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