Malicious PDF — malware analysis report

Static analysis result for SHA-256 45924808cc3b391a…

MALICIOUS

PDF

184.9 KB Created: 2015-08-09 07:47:23 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c717fccc1e3f24aad7ada574816a7a51 SHA-1: bfd731572688ca8966a144efa8baee538de3a125 SHA-256: 45924808cc3b391a9bf09042893642ab350ff41f4ec78efc8de42a7003848483
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by a machine learning classifier and contains a critical heuristic indicating a link to known malicious redirector infrastructure. The embedded URL, http://botcraftman.ru/, is likely part of a phishing or malware distribution chain. No scripts were extracted, and the document body was truncated, limiting further analysis of the exact lure.

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+%D1%87%D0%B8%D1%82%D1%8B+%D0%B4%D0%BB%D1%8F+cs+16+cdhack&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4394/4394296_katalog_zolotoe_runo.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4386/4386818_programma_dlya_sozdaniya_tem_dlya_iphone.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4385/4385884_skachat_chit_na_tanki_onlayn_na_vse_m3.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a5d6.bin
664f7af8fcf4bf600b3954c8ff454bac0d25943c0a64912fdd7a5680c11f131a		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A5D6 6940 bytes
font_00_sfnt_off00023fce.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23FCE 3556 bytes
font_01_sfnt_off00024d51.bin
8969ba10e2fcd8b963478e49766d54066b6b445621ee5858ea5c453dc06b0143		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24D51 14792 bytes
font_02_sfnt_off00027b07.bin
f7ab5584fd689f10e280f9cff0dfff7d5e495466fe56a94dbe5968030e0a6bcb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27B07 14564 bytes
font_04_sfnt_off0002b9f7.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B9F7 6084 bytes
font_05_sfnt_off0002c98c.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C98C 3752 bytes

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