Malicious PDF — malware analysis report

Static analysis result for SHA-256 aaf148fb934e380f…

MALICIOUS

PDF

184.0 KB Created: 2015-08-05 17:06:38 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: d917ee532ae3cd101a1d9b5fdb6ccae2 SHA-1: b58065b605a1e8c2b771d620d52db4eb587a3958 SHA-256: aaf148fb934e380f8e733097f321ca2507d0aaf83bad054a257d552bfa183731
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector infrastructure. The embedded URL, http://botcraftman.ru/, is likely used to direct users to a malicious website. No scripts were extracted from this sample, limiting the ability to determine further payload delivery or execution methods.

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=X7+%D0%BC%D0%B0%D0%BA%D1%80%D0%BE%D1%81%D1%8B+%D0%B4%D0%BB%D1%8F+css&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4305/4305935_fly_high_2.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4306/4306182_rep_skachat_besplatno_bez_registracii.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304439_shablon_lending_peydzh.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a35d.bin
62ec0836f29e2af93b8daddf82096149fd340661595d1ccd12b36544a94d4779		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A35D 6552 bytes
font_00_sfnt_off00023bf5.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23BF5 3556 bytes
font_01_sfnt_off00024978.bin
e184e0d1b591a9d344a2b40b38e7823be2be7894899123918a1c0a9273b1af20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24978 15156 bytes
font_02_sfnt_off00027881.bin
651710e1f66b531bec90b4988ee665f923de9207c186baed18b84663dc06166c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27881 14512 bytes
font_04_sfnt_off0002b619.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B619 6084 bytes
font_05_sfnt_off0002c5ae.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C5AE 3752 bytes

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