Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a758eb2f0a154fa…

MALICIOUS

PDF

188.0 KB Created: 2015-07-24 19:28:15 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 1b6d1b1a0823bd68dee04a8dbb072517 SHA-1: 362671ae4ae7b7e3921ec4f0106a9b00eb0143c7 SHA-256: 1a758eb2f0a154fa6ebc0693863d98fec03dfb2d02fc68657dbaa705bc7bd311
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, and the document body was truncated, limiting further analysis of the exact lure. The primary attack vector appears to be directing the user to a malicious site via the embedded link.

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%B0%D0%BA%D1%82+%D1%81%D0%B2%D0%B5%D1%80%D0%BA%D0%B8+%D0%B2%D0%B7%D0%B0%D0%B8%D0%BC%D0%BD%D1%8B%D1%85+%D1%80%D0%B0%D1%81%D1%87%D0%B5%D1%82%D0%BE%D0%B2+%D0%B1%D0%BB%D0%B0%D0%BD%D0%BA+%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://img1.liveinternet.ru/images/attach/c/5//4191/4191865_skachat_chit_na_shadow_fight_2_na_planshet.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184600_alternativnoe_menyu_dlya_navigatora_480x272.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191591_voennuye_skinuy_dlya_maynkraft.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024c63.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24C63 3556 bytes
font_01_sfnt_off000259e6.bin
a6882fe1f48bb82da9583be176e6871b42ed44d8abc314bb90c7093283601275		 pdf-font-stream PDF embedded font (sfnt) at offset 0x259E6 14528 bytes
font_02_sfnt_off000286e6.bin
858de1ea0edee6589051d6c5805376be02fce034b392ea3476abe13984ffa707		 pdf-font-stream PDF embedded font (sfnt) at offset 0x286E6 14532 bytes
font_03_sfnt_off0002b1d3.bin
8005521c4e4c20d3079d5c22c1247740864268ff5e38f6a228a0954548375005		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B1D3 6996 bytes
font_04_sfnt_off0002c61e.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C61E 6084 bytes
font_05_sfnt_off0002d5b3.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D5B3 3752 bytes

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