Malicious PDF — malware analysis report

Static analysis result for SHA-256 80d1daa60888863c…

MALICIOUS

PDF

185.2 KB Created: 2015-08-08 10:52:33 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 55ad365479438373515265aa25dc176b SHA-1: e8596dcf8fad849d076b74a85f25b60f5f3305b4 SHA-256: 80d1daa60888863cce50a986660544b1fd802701e3c6c82a813fdbd8f0b9da39
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. The ML classifier also flagged this PDF as malicious. While no scripts were directly extracted, the presence of embedded URLs and the heuristic firings strongly suggest a malicious intent, likely related to phishing or malware delivery.

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=emmc+based+fullflash+image+files+plugin+%D0%B3%D0%B4%D0%B5+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384266_insanity_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384871_drayver_dlya_vstroennoy_veb_kameruy_lenovo.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4385/4385066_svadba_po_obmenu_skachat_besplatno_bez_registracii.pdf
    • http://www.microsoft.com/typography/fonts/You
    • http://www.microsoft.com/typography/fonts/

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a4b6.bin
995eee14a0c12d72b99980e73021be13f352c9ed0a9d97733f1c3b47a068f7c1		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A4B6 7568 bytes
font_00_sfnt_off00023cf3.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23CF3 3556 bytes
font_01_sfnt_off00024a76.bin
7df04ce387f620344cf6823d9bfa11292ed43cdd27b8b9d8a1cc1e00e5b63af1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24A76 14996 bytes
font_02_sfnt_off000278b5.bin
d50b43059a15eec42484a381cd0971843919a60e471d334190eae6665749b29f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x278B5 14964 bytes
font_04_sfnt_off0002baf1.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BAF1 6084 bytes
font_05_sfnt_off0002ca86.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CA86 3752 bytes

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