Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ac9d742d405fb4f…

MALICIOUS

PDF

184.8 KB Created: 2015-08-09 13:20:29 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: efb4a69f82711637cdea125f786bb491 SHA-1: 28db856c842f3302a11b55b798eaf633c1f0ba4f SHA-256: 3ac9d742d405fb4fe7282953817054b119ab2c9b2f0a2f540a450e0a56f30f10
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 a known malicious redirector at http://botcraftman.ru/. This indicates the document is likely a lure to direct users to a malicious website. No scripts were extracted, and the document body was not parsable, limiting further analysis of the specific 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=crossfire+%D1%87%D0%B8%D1%82%D1%8B+%D0%BD%D0%B0+%D0%BE%D1%87%D0%BA%D0%B8&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4407/4407499_chituy_k_garrys_mod.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4389/4389263_skachat_windows_7_64bit_domashnyaya_bazovaya_licenziya.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384536_chicken_boy_koduy.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a6fb.bin
87399e77a0e3cdf0f7ce39d66f47793aa80bb10203a40a1ce553dbdc0ebc7319		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A6FB 6484 bytes
font_00_sfnt_off00023f48.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23F48 3556 bytes
font_01_sfnt_off00024ccb.bin
48621cb9cae024a868e2f80d4792426f56f187c4144564036cf5719f6652aff0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24CCB 15244 bytes
font_02_sfnt_off00027bdd.bin
4987e42916edab6c199ab5f0f34cce4f19457cbe89544a652600afeacf5b25a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27BDD 14780 bytes
font_04_sfnt_off0002b959.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B959 6084 bytes
font_05_sfnt_off0002c8ee.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C8EE 3752 bytes

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