Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d6f886ba26cff5d…

MALICIOUS

PDF

187.4 KB Created: 2015-07-26 19:32:36 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c3b48bfcac01685a96fc46ddf92cc1d5 SHA-1: a6b3e873e3f7b0e0d878881501268879e563ba2e SHA-256: 8d6f886ba26cff5ddb2c50f59b7185be91af1db77996718ef905a1cabe29e17a
90 Risk Score

Malware Insights

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

The PDF document was flagged by a machine learning classifier and contains a link to a known malicious redirector. The presence of this link suggests the document is designed to lure the user to a malicious website, likely for phishing or malware distribution. No scripts were extracted, but the critical heuristic firing on the malicious redirector is sufficient evidence for this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B2%D0%B8%D0%BD%D0%B4%D0%BE%D0%B2%D1%81+7+%D1%81%D0%BE+%D0%B2%D1%81%D0%B5%D0%BC%D0%B8+%D0%B4%D1%80%D0%B0%D0%B9%D0%B2%D0%B5%D1%80%D0%B0%D0%BC%D0%B8+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%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//4206/4206057_zayavlenie_na_zagranpasport_novogo_obrazca_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4218/4218094_pin_koduy_na_varfeys_2015_iyul.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4197/4197554_skachat_microsoft_security_essentials_dlya_windows_xp_32.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024901.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24901 3556 bytes
font_01_sfnt_off00025684.bin
a1bb60758f7f554e3c80ea610b4cec3027968da03f344e480466959314813097		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25684 14780 bytes
font_02_sfnt_off00028466.bin
61d14ba452ff6e0dc179888c2f398a787bbab14a9cc52f92372d80655ecc5ef6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28466 14512 bytes
font_03_sfnt_off0002af49.bin
c8243aa4253a8536d85d3bce0e88301b2ef7508c683acde5146df1454bbedeea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AF49 7096 bytes
font_04_sfnt_off0002c3de.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C3DE 6084 bytes
font_05_sfnt_off0002d373.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D373 3752 bytes

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