Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc1af52f1d023451…

MALICIOUS

PDF

185.1 KB Created: 2015-07-24 07:04:42 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c381e1635a8667088d9dceea0767926f SHA-1: 86caa31c68ec2a14a96ed25d72bde52d8588f85f SHA-256: fc1af52f1d0234511c597b6c696185f92c76ffb52b56946d592cfa363de4f94c
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL points to botcraftman.ru, which is identified as a malicious redirector. No scripts were extracted, but the presence of this malicious link strongly suggests an attempt to lure the user to a harmful destination.

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%93%D0%BB%D1%83%D1%88%D0%B8%D1%82%D0%B5%D0%BB%D1%8C+%D0%B4%D0%BB%D1%8F+%D1%81%D0%B0%D0%B9%D0%B3%D0%B0+410+%D1%87%D0%B5%D1%80%D1%82%D0%B5%D0%B6&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187859_skachat_programmu_dlya_vzloma_wifi_na_android.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188669_skachat_sbornik_anekdotov_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187303_klyuch_kasperskiy_2013.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023e96.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23E96 3556 bytes
font_01_sfnt_off00024c19.bin
5c313abb712b820d256ae057cd97cc966f03497887ca80f139f5c2702501cc48		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24C19 15340 bytes
font_02_sfnt_off00027c1e.bin
d7429d9575fdc2d3e5291a7de109b301aff36f507ac58019ef951b41aec65bf9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27C1E 14520 bytes
font_03_sfnt_off0002a6f2.bin
08b417a748fd2310ec45fbcd9b40a8fd711f105fe219db153ee337aa19a2696a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A6F2 6824 bytes
font_04_sfnt_off0002ba95.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BA95 6084 bytes
font_05_sfnt_off0002ca2a.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CA2A 3752 bytes

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