Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4af3fd3482c0ffa…

MALICIOUS

PDF

187.2 KB Created: 2015-07-24 05:08:50 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: a8217cd04ae371f88115614c6a5223e5 SHA-1: a88cc286fd374b374ce215363827ad4ae2c65a1d SHA-256: c4af3fd3482c0ffa5ce51b1050f522a16080e5f75c3fa604344103d0318b186c
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL, http://botcraftman.ru/..., is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware download site. No scripts were extracted, and the document body was not parsable text.

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%B2%D0%B5%D1%80%D0%B1%D0%B5%D1%80+%D1%82%D1%80%D0%B5%D1%82%D1%8C%D0%B5+%D1%87%D0%B5%D0%BB%D0%BE%D0%B2%D0%B5%D1%87%D0%B5%D1%81%D1%82%D0%B2%D0%BE+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+fb2+%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//4187/4187487_fotoshop_skachat_besplatno_bez_sms_bez_registracii.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185602_flesh_pleer_dlya_nokiya_s601.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184770_skachat_besplatno_seks_s_zhivotnuymi.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024800.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24800 3556 bytes
font_01_sfnt_off00025583.bin
cd903007680ce072b2a60c45434f92844fb63bd52eab5d049e7e6819df495ec2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25583 14640 bytes
font_02_sfnt_off0002837b.bin
5d0c8489fde6cb77dd9fea0b42d00e96a318aa1fe45c657cb0891a17e97092ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2837B 14912 bytes
font_03_sfnt_off0002aefd.bin
3b9ff4bcd0a74ea428df3d395a90c24908287107cd2204cf2f6f6eeb75a9f573		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AEFD 6884 bytes
font_04_sfnt_off0002c2d7.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C2D7 6084 bytes
font_05_sfnt_off0002d26c.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D26C 3752 bytes

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