Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b4cc94880b71b3…

MALICIOUS

PDF

187.1 KB Created: 2015-07-25 11:29:09 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 7f556853e6cb9ef3563d76cfbacb80ae SHA-1: 05071bc0d09ac1ce3d45feb3a027b4e40c02f6c0 SHA-256: 72b4cc94880b71b3ec8770c2ea78bb511ee2aedc131c55673e171839038b5a9b
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, botcraftman.ru, which is flagged as critical. The ML classifier also strongly indicates maliciousness. While no scripts were explicitly extracted, the PDF structure and embedded link suggest an attempt to lure the user to a malicious site, likely for further exploitation or credential harvesting.

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=%D1%84%D0%B8%D0%BA%D1%81%D0%B8%D0%BA%D0%B8+%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+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+%D0%B2%D1%81%D0%B5+%D1%81%D0%B5%D1%80%D0%B8%D0%B8&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191742_bcm21553thunderbird_drayver_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192998_gta_5_online_igrat_bez_sms_i_registracii.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4198/4198571_velikolepnuyy_vek_kniga_skachat_besplatno_na_russkom_yazuyke.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_off000247e6.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x247E6 3556 bytes
font_01_sfnt_off00025569.bin
dc1d23a52fa1228b11bc001468b19f6c32263e9413af65e918a5d456ce786de1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25569 15248 bytes
font_02_sfnt_off00028433.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28433 14468 bytes
font_03_sfnt_off0002aee5.bin
281e2fe5b42dcfcc899ab3a8c97b3a782f89ceee091738dc62085b8310eaed93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AEE5 6796 bytes
font_04_sfnt_off0002c27c.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C27C 6084 bytes
font_05_sfnt_off0002d211.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D211 3752 bytes

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