Malicious PDF — malware analysis report

Static analysis result for SHA-256 383d1784bec55970…

MALICIOUS

PDF

185.4 KB Created: 2015-07-24 11:28:25 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 2d86ebcce540860fe0b39650e0b3d6e7 SHA-1: 81655a6e44ff6ef7bf2cea2e8c36d6244e6e722c SHA-256: 383d1784bec559705dd24069cf61522681965b109e2565edb361a18073b9a7cc
90 Risk Score

Malware Insights

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

The PDF contains an embedded link to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The primary attack vector appears to be luring the user to the malicious URL, which is likely part of a phishing or malware distribution scheme. No scripts were extracted, limiting further analysis of the 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=%D0%9F%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D0%B0+%D0%B4%D0%B8%D0%B0%D0%B3%D0%BD%D0%BE%D1%81%D1%82%D0%B8%D0%BA%D0%B8+%D0%B4%D0%BB%D1%8F+ssangyong&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187485_kommercheskaya_smeta_obrazec.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4189/4189159_skachat_origin_dlya_fifa_14_s_torrenta.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185054_hide_tools_dlya_windows_7_x64.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a77c.bin
32b7fb9773935c017fba6d7a4832f20f9020a486270f609cd9d501e3947afb58		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A77C 7048 bytes
font_00_sfnt_off000240bb.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x240BB 3556 bytes
font_01_sfnt_off00024e3e.bin
2fccbd709d4b675309478baaf53e931b2231c8ba3764aa7722480dc5d589ae3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24E3E 15160 bytes
font_02_sfnt_off00027cc8.bin
7396113209d09393996a9bd818826edbc175c555bcac7300eb55388642617043		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27CC8 14468 bytes
font_04_sfnt_off0002bbfb.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BBFB 6084 bytes
font_05_sfnt_off0002cb90.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CB90 3752 bytes

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