Malicious PDF — malware analysis report

Static analysis result for SHA-256 8dbfe45f4278f7d6…

MALICIOUS

PDF

186.2 KB Created: 2015-08-08 09:35:57 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 25c60b7148924e2b7d6e9f412c991457 SHA-1: 3edac6e3856e1b6a07df4014a04830c4367de621 SHA-256: 8dbfe45f4278f7d6258ced3553fdeb52dfe4485da396e46b2b750ee4f5eb2576
92 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a link to known malicious redirector infrastructure. The embedded URL, http://botcraftman.ru/, is likely used to lure users to a malicious site. No scripts were extracted from this sample, limiting further analysis of its behavior.

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+dark+souls+2+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+%D0%BD%D0%B0+pc+%D0%BD%D0%B0+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%BE%D0%BC&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383788_skachat_besplatno_i_bez_registracii_dzhazovuye_albomuy.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383884_pravila_polzovaniya_topograficheskimi_kartami_planami_shemami.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383991_vozduh_v_sisteme_ohlazhdeniya_vaz_2114.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a928.bin
7c25613658e767564eb8c901e6cae72859cb94f5debf2dc26d580390dffa24d6		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A928 7464 bytes
font_00_sfnt_off0002439f.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2439F 3556 bytes
font_01_sfnt_off00025122.bin
4cd385d53181532884cd7ad3924c8e8558ea5ec70c8c3775f8270ac5bb3b4df3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25122 14456 bytes
font_02_sfnt_off00027e7f.bin
93c418e6c11de7b23ebad3375ca5df240073198beaf9240ed8df351bf7e60910		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27E7F 14468 bytes
font_04_sfnt_off0002bf2a.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF2A 6084 bytes
font_05_sfnt_off0002cebf.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CEBF 3752 bytes

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