Malicious PDF — malware analysis report

Static analysis result for SHA-256 280de48ee568831e…

MALICIOUS

PDF

186.4 KB Created: 2015-07-24 00:54:18 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: ba8382545cd6a9be25964f18f16eda90 SHA-1: ac71ddb5c147037e124ac9eef742a23c8935d472 SHA-256: 280de48ee568831e6daf2acdc36900863d4edd7361cf3f7bbf2266e19ceba122
90 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics as malicious, specifically for containing a link to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The embedded URL points to botcraftman.ru, which is identified as malicious infrastructure. This suggests the document is designed to lure users to a harmful site.

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%9D%D0%B5+%D0%BD%D0%B0%D0%B9%D0%B4%D0%B5%D0%BD%D0%BE+%D0%BD%D0%B8+%D0%BE%D0%B4%D0%BD%D0%BE%D0%B3%D0%BE+%D1%84%D0%B0%D0%B9%D0%BB%D0%B0+%D1%83%D0%BA%D0%B0%D0%B7%D0%B0%D0%BD%D0%BD%D0%BE%D0%B3%D0%BE+%D0%B4%D0%BB%D1%8F+isarcextract&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184507_age_of_empires_4_skachat_besplatno_russkaya_versiya_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185630_skachat_proekt_doma_iz_penoblokov.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185793_metro_2_igra_skachat_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002aa4a.bin
1a0ba0d62f26e1975ad6ff14a0e572f3769bfa3aec50b69d8d8fbae8240b389c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2AA4A 7312 bytes
font_00_sfnt_off000243c5.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x243C5 3556 bytes
font_01_sfnt_off00025148.bin
346f044faf2d1edac6c101b11c55589cc3412b4889c5b46eb71369c3b50d522f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25148 14572 bytes
font_02_sfnt_off00027eff.bin
5971d6c22cfff9caf37d6c5801420de7541798388d66551264258ce495aafbfe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27EFF 14644 bytes
font_04_sfnt_off0002bf9b.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF9B 6084 bytes
font_05_sfnt_off0002cf30.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CF30 3752 bytes

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