Malicious PDF — malware analysis report

Static analysis result for SHA-256 1644990f907688ab…

MALICIOUS

PDF

185.1 KB Created: 2015-07-24 07:32:04 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: ff96d57e126e1b15ee4e777df2556aac SHA-1: 808b76030c923baaae36251f2dd39a94e20a1406 SHA-256: 1644990f907688ab2c34b593f5ca997330feab46c799533d79d31473678e0e89
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL, http://botcraftman.ru/..., is associated with malicious activity and appears to be a lure for downloading Android software. While no scripts were directly extracted, the PDF structure and the malicious link strongly suggest an attempt to deliver a payload or phish user credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-8733645-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8733645-0
  • 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%80%D1%83%D1%82+%D0%BF%D1%80%D0%B0%D0%B2%D0%B0+%D0%BD%D0%B0+%D0%B0%D0%BD%D0%B4%D1%80%D0%BE%D0%B8%D0%B4+411+%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//4185/4185332_wifi_pirate_13_tortuga_polnaya_versiya_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184892_agabekyan_angliyskiy_yazuyk_dlya_ssuzov_reshebnik_gdz.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185699_skachat_muzuyku_besplatno_nyusha_vse_albomuy.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_off000240c8.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x240C8 3556 bytes
font_01_sfnt_off00024e4b.bin
4536f9a033b6f6f4ad4dc04a2b07d30a19656241b70f2b43aa53b7e15a4f3466		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24E4B 14560 bytes
font_02_sfnt_off00027bc3.bin
6ad9b1c40d206dff161cab727ef19673356160109b7761501a2ce5fa4fbc1e14		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27BC3 14468 bytes
font_03_sfnt_off0002a675.bin
65ccea599d7829f39ce0abeda02e62df136e9e194656fcde9f44a4bb736c5302		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A675 6880 bytes
font_04_sfnt_off0002ba68.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BA68 6084 bytes
font_05_sfnt_off0002c9fd.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C9FD 3752 bytes

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