Malicious PDF — malware analysis report

Static analysis result for SHA-256 92ee1c59cfec37e5…

MALICIOUS

PDF

185.9 KB Created: 2015-07-26 04:21:53 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 973f920d61bc4eb6929a8b64702293b3 SHA-1: 0f19fbf38c7cfac220a2ba77586ee9389ae8a907 SHA-256: 92ee1c59cfec37e595a5040d5b0a21e336ff91a8c4c19159cf717e80678b5971
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 critical heuristic firing for a malicious redirector link. The link points to http://botcraftman.ru/, which is known to host malicious content. The document body appears to be truncated and does not provide further context on the lure, but the presence of the malicious URL strongly suggests a phishing or malware delivery attempt.

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=Hp+compaq+presario+cq57+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B4%D1%80%D0%B0%D0%B9%D0%B2%D0%B5%D1%80+%D1%81%D0%B5%D1%82%D0%B5%D0%B2%D0%BE%D0%B9+%D0%BA%D0%BE%D0%BD%D1%82%D1%80%D0%BE%D0%BB%D0%BB%D0%B5%D1%80&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4195/4195496_defektnuyy_akt_obrazec_rb.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4203/4203534_antivirus_kasperskogo_skachat_besplatno_na_1_god.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192138_skachat_film_uboynuyy_futbol_cherez_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a6ea.bin
579a8805ea417584ea5076d04e10cf4ed76789e2ce4a791dd68eba73ddd9ea23		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A6EA 7704 bytes
font_00_sfnt_off000240f1.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x240F1 3556 bytes
font_01_sfnt_off00024e74.bin
3c5821e5416d0929cd585da5ce71ed3acf589a7bca43b32aa05e82597ca50ed9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24E74 14000 bytes
font_02_sfnt_off00027abf.bin
3c1f3971c39b318c46d6b30f0f8072278a4a2de452f25c6738d5018b5d128628		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27ABF 15056 bytes
font_04_sfnt_off0002bd9b.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BD9B 6084 bytes
font_05_sfnt_off0002cd30.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CD30 3752 bytes

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