Malicious PDF — malware analysis report

Static analysis result for SHA-256 575f65821819f7d1…

MALICIOUS

PDF

186.1 KB Created: 2015-07-25 09:36:04 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 238087fc6892824735506eb9d2606f86 SHA-1: 82f394e521aac02ae543605dcf1444b878c43b9a SHA-256: 575f65821819f7d1fdc331190065a84505906ea1f80ba0542ee0febfdca29a11
92 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 it is designed to lead users to harmful content. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of the malicious 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=%D0%92%D0%B8%D0%BA%D1%82%D0%BE%D1%80+%D0%B4%D0%BE%D1%86%D0%B5%D0%BD%D0%BA%D0%BE+%D0%BF%D1%80%D0%B8%D0%B3%D0%BE%D0%B2%D0%BE%D1%80+%D1%81%D0%B0%D0%BC%D1%83%D1%80%D0%B0%D1%8F+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192123_enumerating_packages_serious_sam_3.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187844_obrazec_avtobiografii_v_prokuraturu.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192305_navitel_dlya_nokia_n8_skachat_besplatno.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002446c.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2446C 3556 bytes
font_01_sfnt_off000251ef.bin
eb746855367493872477101a1c794b3482e52c8cd5d90da9e8c0ade6aa9d9a33		 pdf-font-stream PDF embedded font (sfnt) at offset 0x251EF 14872 bytes
font_02_sfnt_off0002801a.bin
b1e1cc546f0f1eacb0fa825f4ffec9a121aa6720056131ecd420011035d35d0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2801A 14680 bytes
font_03_sfnt_off0002aae0.bin
9ac82d3aeca88a8fb419c1952c437e04527edfe4a24702535dc44a15c0696b9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AAE0 6884 bytes
font_04_sfnt_off0002beb9.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BEB9 6084 bytes
font_05_sfnt_off0002ce4e.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CE4E 3752 bytes

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