Malicious PDF — malware analysis report

Static analysis result for SHA-256 2240a20e756da4dc…

MALICIOUS

PDF

186.9 KB Created: 2015-07-24 04:39:19 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: d35f914d8cc47d3c985f515340e059ac SHA-1: e3d40b75b36ebae0735e8c63a20d34f4e489b67a SHA-256: 2240a20e756da4dc6203a4056a09fd98aecff37d16029b83dd0b60721419bd87
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 a known malicious redirector, http://botcraftman.ru/. This suggests the document is designed to lure users to a malicious website. 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=Windows+7+%D0%BC%D0%B0%D0%BA%D1%81%D0%B8%D0%BC%D0%B0%D0%BB%D1%8C%D0%BD%D0%B0%D1%8F+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+32+bit+%D1%87%D0%B8%D1%81%D1%82%D0%B0%D1%8F&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187632_dnevnik_po_proizvodstvennoy_praktike_farmacevta.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188103_avtokad_2009_skachat_besplatno_russkaya_versiya.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184566_primeruy_po_matematike_3_klass_raspechatat_stolbikom.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002ab8d.bin
908f161aa47ea841e0fb55641695b09a261872ca5c1f2bc7981ebaa938c0c665		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2AB8D 7500 bytes
font_00_sfnt_off00024437.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24437 3556 bytes
font_01_sfnt_off000251ba.bin
75487fd0e96f643800908952c7750bfffbc88b0d48a6fea648819a7a02540737		 pdf-font-stream PDF embedded font (sfnt) at offset 0x251BA 14628 bytes
font_02_sfnt_off00027fad.bin
6e493ca2540266ea8311899f61f0171268d1163102364b939f59d5406980e5a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27FAD 14828 bytes
font_04_sfnt_off0002c1aa.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C1AA 6084 bytes
font_05_sfnt_off0002d13f.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D13F 3752 bytes

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