Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c5e81985a5d487b…

MALICIOUS

PDF

186.3 KB Created: 2015-07-25 00:03:52 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 91ff65fa82ed3a2fb9cee1f1d4c8f5d5 SHA-1: a769145381b600472a3e0f6c8c5c977c82b2828c SHA-256: 5c5e81985a5d487bf57e50defb76ecb26a16b14e73742ec33dd7ed2f5e9e047e
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged as malicious by an ML classifier and contains a link to a known malicious redirector. The embedded URL, http://botcraftman.ru/, is likely used to redirect the user to a site that hosts malware or phishing content. No scripts were extracted, but the presence of a malicious link suggests an attempt to deliver a second-stage payload.

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%B8%D0%B3%D1%80%D1%83+call+of+duty+mw3+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185453_obrazec_otcheta_na_1_kategoriyu_rentgenolaboranta.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187681_reshenie_egye_po_informatike_2015.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185042_subway_surfers_na_android_s_beskonechnuymi_dengami_i_klyuchami.pdf
    • http://www.microsoft.com/typography/fonts/
    • http://www.microsoft.com/typography/fonts/You

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024135.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24135 3556 bytes
font_01_sfnt_off00024eb8.bin
e13d3215e56e533c6bf25c866293019524886b99f331ac91c1f01e547b43f418		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24EB8 15108 bytes
font_02_sfnt_off00027d78.bin
d0a4eb2dea50699f0f9c45a172e827123f58c3b425f28d9d79e1a09810e869a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27D78 14916 bytes
font_03_sfnt_off0002a987.bin
7aa2d64880f9ec21408b8953e2970cd47128bcf5e3fb5dc54f977eaa9cc3b9f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A987 7452 bytes
font_04_sfnt_off0002bf90.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF90 6084 bytes
font_05_sfnt_off0002cf25.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CF25 3752 bytes

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