Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb5285bea5cd2c1c…

MALICIOUS

PDF

188.5 KB Created: 2015-08-05 13:17:09 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c00c774e328f13893f7dc2896f74cd75 SHA-1: b11e362eb60ae5afa739a4ef9e95cbf300713ae7 SHA-256: eb5285bea5cd2c1c52c3146fc181eba67ad37d10c5ca010f14d2b08d6552d4eb
90 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating a link to known malicious redirector infrastructure. The ML classifier also strongly flagged this PDF as malicious. The primary IOC is the malicious URL, which is likely intended to lead the user to a phishing or malware distribution site. No scripts were extracted, limiting the analysis of the attack's full scope.

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%BF%D0%B5%D1%80%D1%81%D0%BE%D0%BD%D0%B0%D0%BB%D0%B8%D0%B7%D0%B0%D1%86%D0%B8%D1%8F+%D0%B4%D0%BB%D1%8F+%D1%80%D0%B0%D0%B1%D0%BE%D1%87%D0%B5%D0%B3%D0%BE+%D1%81%D1%82%D0%BE%D0%BB%D0%B0+windows+7+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4243/4243105_euro_truck_simulator_3.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4223/4223143_kod_aktivacii_dlya_kasperskogo_2015_besplatno_na_30_dney.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192776_skachat_mafiyu_banditskiy_peterburg_cherez_torrent_besplatno.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002b22c.bin
cc2c6efd136fc0b01719eb4e8a5c13e3a7efd741c1730db5bd788742fb6527c1		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2B22C 7504 bytes
font_00_sfnt_off00024c18.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24C18 3556 bytes
font_01_sfnt_off0002599b.bin
1c38ea6e8bdb792e53d3cc7b073489c7599cc321966f20d9da6766bfe744c1e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2599B 14556 bytes
font_02_sfnt_off0002870c.bin
9d90e18ee50434addfa8c210065a1461feda93b1cad23cebf91f15991c29ade2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2870C 14584 bytes
font_04_sfnt_off0002c830.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C830 6084 bytes
font_05_sfnt_off0002d7c5.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D7C5 3752 bytes

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