Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a8598625befd260…

MALICIOUS

PDF

186.5 KB Created: 2015-08-08 09:49:12 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 00c56b717750fd4deab68c881603f7bd SHA-1: cb9f72cb311729b1f75b0eb5d68a84a5b52a53c7 SHA-256: 1a8598625befd260d7e34ff199a0d0d515822cd1362a5be0cae258f1c164c746
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 containing a link 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 not sufficiently readable to provide further context.

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=%D0%BF%D0%BE%D1%87%D0%B5%D0%BC%D1%83+%D0%B0%D0%B9%D1%84%D0%BE%D0%BD+%D0%B2%D1%8B%D0%BA%D0%BB%D1%8E%D1%87%D0%B0%D0%B5%D1%82%D1%81%D1%8F+%D0%BD%D0%B0+30+%D0%B7%D0%B0%D1%80%D1%8F%D0%B4%D0%BA%D0%B8&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384115_amibcp_v337_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383808_skachat_butanimaciyu_dlya_android.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384432_telefonnuyy_spravochnik_nizhnego_novgoroda.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002423c.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281
pdf-font-stream PDF embedded font (sfnt) at offset 0x2423C 3556 bytes
font_01_sfnt_off00024fbf.bin
ba771ef6860e2f1eafecba155776bf392c5c67177abee7ee30c4ffd32155de53
pdf-font-stream PDF embedded font (sfnt) at offset 0x24FBF 15168 bytes
font_02_sfnt_off00027f62.bin
0f01c764c0a348295fe8b55b7844622f0d665403210eeb1ac9b7c920b29859aa
pdf-font-stream PDF embedded font (sfnt) at offset 0x27F62 14468 bytes
font_03_sfnt_off0002aa10.bin
58aff45fa0393cfdcbd3fc7209601e5501a66e5a8bb4155866891b0bd1d2a26c
pdf-font-stream PDF embedded font (sfnt) at offset 0x2AA10 7484 bytes
font_04_sfnt_off0002c013.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3
pdf-font-stream PDF embedded font (sfnt) at offset 0x2C013 6084 bytes
font_05_sfnt_off0002cfa8.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e
pdf-font-stream PDF embedded font (sfnt) at offset 0x2CFA8 3752 bytes