Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed52df2dfd00161d…

MALICIOUS

PDF

186.7 KB Created: 2015-07-25 09:46:24 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: d73d373e645e0f913cd8116cbec364ef SHA-1: db4515aa63ad8b14df15b071216b7be37af6310b SHA-256: ed52df2dfd00161d8d2ae51b7ec16b156edc5e406be3b8382577767920724081
90 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector infrastructure, indicating an attempt to lure the user to a harmful site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is sufficient evidence of malicious intent.

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%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%84%D0%B8%D0%BB%D1%8C%D0%BC%D1%8B+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D0%BD%D0%B0+%D0%B0%D0%BD%D0%B4%D1%80%D0%BE%D0%B8%D0%B4+%D0%BF%D0%BB%D0%B0%D0%BD%D1%88%D0%B5%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184847_osip_nazaruk_roksolana_skachat_besplatno_na_russkom_yazuyke.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4199/4199648_skachat_svezhie_klyuchi_dlya_kis_2015.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188599_pci_shina_0_ustroystvo_31_funkciya_3_drayver.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024608.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24608 3556 bytes
font_01_sfnt_off0002538b.bin
8df6a9ba4f5c60ccfb7245e501e6ca03be86f91d9c2166d1b9cc7251c4e228a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2538B 14744 bytes
font_02_sfnt_off000281c8.bin
8c5e5bc4674cee60ec6c1619e60533ff44be00efca6b5f228c587d2f19a61a12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x281C8 14520 bytes
font_03_sfnt_off0002ac97.bin
5c5c6a413fe271c573c1b1bdf686e2a4a02511335e2bba19a3bbacdcef4b1b27		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AC97 7012 bytes
font_04_sfnt_off0002c0e6.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C0E6 6084 bytes
font_05_sfnt_off0002d07b.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D07B 3752 bytes

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