Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c69de7a421e30cb…

MALICIOUS

PDF

186.2 KB Created: 2015-07-26 13:06:57 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: a7256165796861a364c0dff76b911237 SHA-1: c1bf7b938353e23a64d6b8ce68cb505003704fab SHA-256: 2c69de7a421e30cb13738bd8acadcfca11aebf8a46c7aa45cc186d179b7bc9d8
90 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of the malicious URL is sufficient evidence for the attack pattern. The file was generated by wkhtmltopdf, a tool often used to convert HTML to PDF, which can be abused for malicious purposes.

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%9D%D0%B5+%D1%80%D0%BE%D0%B4%D0%B8%D1%81%D1%8C+%D0%BA%D1%80%D0%B0%D1%81%D0%B8%D0%B2%D0%BE%D0%B9+%D0%BA%D0%BD%D0%B8%D0%B3%D0%B0+%D0%BD%D0%BE%D0%B2%D0%B0%D1%8F+%D0%B6%D0%B8%D0%B7%D0%BD%D1%8C+%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//4197/4197254_alavar_kryak_2015.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4201/4201350_skachat_film_ekaterina_velikaya_2015_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188631_blue_mountain_state_2_sezon_skachat_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002443a.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2443A 3556 bytes
font_01_sfnt_off000251bd.bin
0edee20c93d70e3810c4095c3a23987324ecfdda01b0fb054f66e287e11ce6d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x251BD 15212 bytes
font_02_sfnt_off00028039.bin
aaee47547601296880a49cd76916615248e32daa81400e22f7f8484a6c961290		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28039 14468 bytes
font_03_sfnt_off0002aae6.bin
6a4cf02db16af94110e518f0bcb74888609b269dd64c324e38fa8cd796cfd97f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AAE6 6948 bytes
font_04_sfnt_off0002bed6.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BED6 6084 bytes
font_05_sfnt_off0002ce6b.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CE6B 3752 bytes

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