Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5d54315980fc262…

MALICIOUS

PDF

185.8 KB Created: 2015-07-23 20:09:23 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: a566b9ee315308d0acad40451a63eebb SHA-1: 7790e239bd5fe2262aee1a80587fe6a96dad21b9 SHA-256: a5d54315980fc2628d51b41928746e03c0624a683da339ac8240cab4efa6bc8a
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 http://botcraftman.ru/... is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site. No scripts were extracted, and the document body was truncated, limiting further analysis of the delivery mechanism.

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%BD%D1%8D%D0%BD%D1%81%D0%B8+%D0%B4%D1%80%D1%8E+%D0%BF%D1%80%D0%B8%D0%B7%D1%80%D0%B0%D0%BA+%D0%B2%D0%B5%D0%BD%D0%B5%D1%86%D0%B8%D0%B8+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184383_biletuy_na_pogruzchik.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184316_usloviya_postavki_01187462_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184350_yesse_po_obschestvu_primeruy.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024362.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24362 3556 bytes
font_01_sfnt_off000250e5.bin
b3c43893e89e97e75a060c072f04388a76df136dfff02cc22da56dbfa2100239		 pdf-font-stream PDF embedded font (sfnt) at offset 0x250E5 14720 bytes
font_02_sfnt_off00027f20.bin
20910cc2b147a63b6c39c290e4b056906e715eb78bd05d72a95af2fff9092e74		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27F20 14468 bytes
font_03_sfnt_off0002a9d4.bin
4e34d73d3ae8079e6a749dc22a45458d6f0ba8493a50c166a6565e111acf2bda		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A9D4 6824 bytes
font_04_sfnt_off0002bd6f.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BD6F 6084 bytes
font_05_sfnt_off0002cd04.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CD04 3752 bytes

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