Malicious PDF — malware analysis report

Static analysis result for SHA-256 a704a4e48c85970a…

MALICIOUS

PDF

187.1 KB Created: 2015-07-25 06:23:10 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 2b84d44ebf409eb211bcf28513cca456 SHA-1: b9e7ad0b38343136578c00302960645a132fd281 SHA-256: a704a4e48c85970a12224df2ea8072f40d266d1dc42461c1e415ce76c4e8a0df
92 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, botcraftman.ru. This indicates an attempt to lure the user to a harmful site, likely for phishing or to download further malware. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, limiting the analysis of specific behaviors.

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+windows+7+%D0%B4%D0%BE%D0%BC%D0%B0%D1%88%D0%BD%D1%8F%D1%8F+%D1%80%D0%B0%D1%81%D1%88%D0%B8%D1%80%D0%B5%D0%BD%D0%BD%D0%B0%D1%8F+32+bit+%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://img1.liveinternet.ru/images/attach/c/5//4195/4195058_skachat_film_zheleznuyy_chelovek_3_na_android.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4190/4190531_kod_na_gta_san_andreas_skeytbord.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4193/4193910_skachat_zhurnalnuyy_klyuch_doktor_veb_avgust_2015.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002ac45.bin
ace3ad27b54170a071ab72d86c9b59c5161a9385350e0a2683b16427a4efc8a5		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2AC45 7588 bytes
font_00_sfnt_off00024493.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24493 3556 bytes
font_01_sfnt_off00025216.bin
fe74f34b66c20b8fdce87967ef4d66f347d4b6424a47a0861adbf42ecb8b146c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25216 14780 bytes
font_02_sfnt_off0002804a.bin
19ece7b7fd2c4c7f30c35ad2a55091b8aa07b1e822b9424c49be86e1e151a8e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2804A 14884 bytes
font_04_sfnt_off0002c2af.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C2AF 6084 bytes
font_05_sfnt_off0002d244.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D244 3752 bytes

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