Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b3a583a629abfe4…

MALICIOUS

PDF

187.9 KB Created: 2015-07-23 23:46:22 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: dc675651f5426b4f86b0f9a45b036e69 SHA-1: 464aaea5f4c9f962a24a996c155306534cd857de SHA-256: 7b3a583a629abfe445cf45b43a2876a487b244c5c9890ecf32b27c1c9e1292ac
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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%B0%D1%81%D1%82%D1%80%D0%BE%D0%BB%D0%BE%D0%B3%D0%B8%D1%8F+%D0%BE%D0%B1%D0%BE%D0%BB%D1%8C%D1%89%D0%B5%D0%BD%D0%B8%D1%8F+%D0%B2%D0%B0%D1%81%D0%B8%D0%BB%D0%B8%D1%81%D0%B0+%D0%B2%D0%BE%D0%BB%D0%BE%D0%B4%D0%B8%D0%BD%D0%B0+%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&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184451_chak_palanik_ucelevshiy_skachat_fb2.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185367_dzhey_konrad_levinson_partizanskaya_kreativnost_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185256_gta_5_na_pk_piratka_skachat_torrent.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_off00024964.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24964 3556 bytes
font_01_sfnt_off000256e7.bin
fd6e121b1223bd38444c1ab9f5629e12f29c7aa0040cb3ec9805e88f373a8c8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x256E7 15416 bytes
font_02_sfnt_off00028715.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28715 14468 bytes
font_03_sfnt_off0002b1c7.bin
1e478c62de46b163f006b31603016cdacf808e96b92fc323d4980e8db7bbe666		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B1C7 6908 bytes
font_04_sfnt_off0002c5ab.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C5AB 6084 bytes
font_05_sfnt_off0002d540.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D540 3752 bytes

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