Malicious PDF — malware analysis report

Static analysis result for SHA-256 202582281e9abafe…

MALICIOUS

PDF

186.6 KB Created: 2015-07-24 11:50:44 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 233abab81300238e6718145954554a23 SHA-1: 5c947c3dc07f8cdfd2b642eaa482d91054e27bc4 SHA-256: 202582281e9abafe95d399182af54ae531f71db8df2a2e2d0b4d9cb299844e18
92 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. This indicates the document is likely a lure to direct users to a malicious website for phishing or malware delivery. No scripts were extracted, but the presence of the malicious URL is a strong indicator 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%94%D0%BE%D0%BF%D0%BE%D0%BB%D0%BD%D0%B8%D1%82%D0%B5%D0%BB%D1%8C%D0%BD%D1%8B%D0%B5+%D1%84%D0%B8%D0%B3%D1%83%D1%80%D1%8B+%D0%B4%D0%BB%D1%8F+visio+2010+%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://img1.liveinternet.ru/images/attach/c/5//4191/4191541_skachat_komissar_vse_pesni_cherez_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185834_gotovoe_portfolio_uchenika_9_klassa.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191547_skachat_zhurnaluy_radio_za_2015_god_cherez_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002aa9f.bin
3920dd7e3a3eec79e3c2d93ace19b758daeef44369f120ae1e2cced85199dc91		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2AA9F 7496 bytes
font_00_sfnt_off00024416.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24416 3556 bytes
font_01_sfnt_off00025199.bin
8416ac19dbbeae1d5a9f62639b568cd7fd57aff389880235c68a4c4c1cb3e413		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25199 14672 bytes
font_02_sfnt_off00027fba.bin
e09b47aa32fa5980cf9bbe6028f11a049beb8ca3ff9f41141b3abe9290924602		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27FBA 14516 bytes
font_04_sfnt_off0002c0a8.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C0A8 6084 bytes
font_05_sfnt_off0002d03d.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D03D 3752 bytes

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