Malicious PDF — malware analysis report

Static analysis result for SHA-256 2144625c7f184b47…

MALICIOUS

PDF

186.7 KB Created: 2015-07-23 20:33:02 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 215c694d30d814273c483480ead4c240 SHA-1: d4fb2b334a2bbd4fd882b99c5bad2a7b1774b3ad SHA-256: 2144625c7f184b47900a7ee72d643b9215d0862f70ebab2b0b4e22acfc4704eb
92 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, botcraftman.ru, which is designed to lure users to malicious content. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, but the presence of a malicious URL indicates a phishing or redirection attempt.

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=windows+vista+home+premium+sp2+32+bit+rus+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%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://img0.liveinternet.ru/images/attach/c/5//4184/4184534_hspa_locker_13b_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184525_kak_sdelat_amfetamin_v_domashnih_usloviyah.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184562_vuyyti_zamuzh_lyuboy_cenoy_skachat_besplatno_fb2.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002aa28.bin
989c1c83f632c4d3e4a3362f0433becdd7e8a11133e5e29b9e8261cb9f09cfdb		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2AA28 7812 bytes
font_00_sfnt_off000241a1.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x241A1 3556 bytes
font_01_sfnt_off00024f24.bin
20fa196bf10ac2445e2e5be04b218645dd38806029aa9f5343894992eced51d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24F24 15100 bytes
font_02_sfnt_off00027db8.bin
3be9e6cb78c86512fcc9819498f104349e60f06b4d2e52afecd274a7f3215755		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27DB8 15100 bytes
font_04_sfnt_off0002c132.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C132 6084 bytes
font_05_sfnt_off0002d0c7.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D0C7 3752 bytes

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