Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5d7ed9b3ad543d1…

MALICIOUS

PDF

186.1 KB Created: 2015-07-25 09:29:45 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: f5f29b1b9ca4d844b9d5fac8be64a253 SHA-1: b1e562b5ab0ce3cb8751631b89b4d890d61c0e79 SHA-256: d5d7ed9b3ad543d165b4fbca86fa9e9a15dd786dd3a2a60ed4c4aae6b7770e8a
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, botcraftman.ru, which is designed to lure users into downloading potentially unwanted software or malware. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the embedded URL is sufficient evidence of a malicious lure.

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=sql+server+2012+rus+sp1+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+torrent&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4200/4200952_vuykup_nevestuy_scenariy_v_chastnom_dome.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4202/4202342_skachat_mod_na_maynkraft_172_web_displays.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184379_korporativnaya_socialnaya_otvetstvennost_uchebnik_skachat.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a84f.bin
5618a6b5f7af5998e390d0dfb3b9a2d2b82c980b28f6d01f3f017584e38820d8		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A84F 7532 bytes
font_00_sfnt_off00023ff1.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23FF1 3556 bytes
font_01_sfnt_off00024d74.bin
04cdc8bb0ee7498ab11d77a49e85f4e8543121c30a135e94a674d4cf288abe08		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24D74 15108 bytes
font_02_sfnt_off00027c22.bin
2be69abc1fbd5cd59451cec6f1c5fee8c8df0a3e0a3cfacb103e347df65c22a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27C22 14988 bytes
font_04_sfnt_off0002be98.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BE98 6084 bytes
font_05_sfnt_off0002ce2d.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CE2D 3752 bytes

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