Malicious PDF — malware analysis report

Static analysis result for SHA-256 a27813bed1980dca…

MALICIOUS

PDF

184.8 KB Created: 2015-08-08 09:53:14 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c9a295abd87953572899e31fec020e97 SHA-1: 72f5afe42c8b6a230e650244e4a454e23c8ebd89 SHA-256: a27813bed1980dca4035be731362f1a1c19393ab9da4ef170c196be69f1c4510
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector. This indicates the document is likely part of a phishing or malware distribution campaign. The primary IOC is the malicious URL, which is likely used to funnel victims to a compromised site. No scripts were extracted, limiting further analysis of the delivery mechanism.

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%BB%D0%BE%D0%BB%D0%B8%D1%82%D0%B0+%D0%B0%D1%83%D0%B4%D0%B8%D0%BE%D0%BA%D0%BD%D0%B8%D0%B3%D0%B0&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384131_instrukciya_avtomagnitoluy_nd3tw56.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384359_kuda_podavat_zayavlenie_na_detskiy_sad.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383700_zanimatelnuye_zadachi_po_algebre_dlya_5_7_klassov_s_resheniyami.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002407a.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2407A 3556 bytes
font_01_sfnt_off00024dfd.bin
ca255df52775766d13e6a645bca0b0e3dc9eba3463cfd0005aa78b1520cf2fd4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24DFD 15364 bytes
font_02_sfnt_off00027e28.bin
81babbaaaccdd57319726c6907c47cf83ebdfb4db488881eaac0764c986367a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27E28 14468 bytes
font_03_sfnt_off0002a8d9.bin
36f5142e584c6e13539062585cd244d4a908d6b04aeb8bfab1f117a7e856a1c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A8D9 6000 bytes
font_04_sfnt_off0002b997.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B997 6084 bytes
font_05_sfnt_off0002c92c.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C92C 3752 bytes

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