Malicious PDF — malware analysis report

Static analysis result for SHA-256 37fa6b5536c9f927…

MALICIOUS

PDF

185.5 KB Created: 2015-08-05 15:43:26 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 25dda8ca82690b5627045aea37b4ccc0 SHA-1: 8ee17e11783c58b9c4cd02be8fe265319300b9ff SHA-256: 37fa6b5536c9f92793f0985459b5d9d9fe24727d65dfd89e51f92a605088ffff
92 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 known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL `http://botcraftman.ru/...` is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site. No scripts were extracted, and the document body was truncated and unreadable.

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=poets+of+the+fall+%D0%B4%D0%B8%D1%81%D0%BA%D0%BE%D0%B3%D1%80%D0%B0%D1%84%D0%B8%D1%8F+%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/6//4305/4305618_zhaloba_v_prokuraturu_na_zhkh_obrazec.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304836_manwis_2013_skachat_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4305/4305601_garena_master_skachat_besplatno.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a71c.bin
6336e347b9c22ed2a9156e33b43f2ff943da28ce1794eb3573d5ee5ea3ace073		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A71C 7224 bytes
font_00_sfnt_off00023f16.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23F16 3556 bytes
font_01_sfnt_off00024c99.bin
cef0f6e3b156803dee5d61010525c50022b78b85ee386b16e7e7a686d46c902b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24C99 15184 bytes
font_02_sfnt_off00027b81.bin
e63437886a181e75e3bd9bbe251d6bfb2cca8ec5825b14fe7278f1e1ac193242		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27B81 14920 bytes
font_04_sfnt_off0002bc3c.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BC3C 6084 bytes
font_05_sfnt_off0002cbd1.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CBD1 3752 bytes

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