Malicious PDF — malware analysis report

Static analysis result for SHA-256 85600a2bed6032f4…

MALICIOUS

PDF

184.3 KB Created: 2015-07-24 11:37:21 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: e8d28c18948f665dedac838ace9c8729 SHA-1: c9755a16b02f080f702569eba6d909717dac024d SHA-256: 85600a2bed6032f4bf9cdf8b87367a5fa42512285485e002001f5fe157053058
92 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, botcraftman.ru, which is likely intended to lure users into downloading malware by posing as a Flash player update. The ML classifier also flagged this PDF with high confidence. No scripts were extracted from this sample.

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=Flash+player+jar+%D0%B4%D0%BB%D1%8F+%D1%82%D0%B5%D0%BB%D0%B5%D1%84%D0%BE%D0%BD%D0%B0&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187077_infamous_second_son_na_pc_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184766_camhackru_v192_forum.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4190/4190171_skachat_filmuy_na_telefon_3gp_besplatno_240_320.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a358.bin
2770dbdaca2143f72888eaaf36f12dc2f7ee95eb52ad96625ca90358046700dd		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A358 6940 bytes
font_00_sfnt_off00023ce8.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23CE8 3556 bytes
font_01_sfnt_off00024a6b.bin
270de05e981169c710a402366cafe36a478af54bead31246588a439821f31f48		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24A6B 14728 bytes
font_02_sfnt_off00027800.bin
434e8d424e5921d82bf77467e149ef6be5ee457ac18609c7b48f77d1888263ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27800 14708 bytes
font_04_sfnt_off0002b77c.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B77C 6084 bytes
font_05_sfnt_off0002c711.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C711 3752 bytes

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