Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc444a69656d70b2…

MALICIOUS

PDF

185.4 KB Created: 2015-07-23 20:32:06 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 05340013ad7a1a2b405be0848578bcf1 SHA-1: 797d1deff4892fd1cd966887edaa1787cd8e0756 SHA-256: fc444a69656d70b2b40d606f3e2a136324ad1ea6d222564deacfdbfcdf2593b0
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 linking to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL points to botcraftman.ru, which is identified as a malicious redirector. No scripts were extracted, and the document body was truncated, but the presence of the malicious link is sufficient evidence of malicious intent.

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%90%D0%BB%D1%8C%D1%82%D0%B5%D1%80%D0%BD%D0%B0%D1%82%D0%B8%D0%B2%D0%BD%D0%BE%D0%B5+%D0%BC%D0%B5%D0%BD%D1%8E+%D0%B4%D0%BB%D1%8F+%D0%BD%D0%B0%D0%B2%D0%B8%D0%B3%D0%B0%D1%82%D0%BE%D1%80%D0%B0+480x272&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184314_shablon_prezentacii_powerpoint_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183175_lada_kalina_yelektricheskaya_shema.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184313_supersu_ne_smog_ustanovit_binarnuyy_fayl_su.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024160.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24160 3556 bytes
font_01_sfnt_off00024ee3.bin
850b275607fc025c785a1393c290523bf9915f602f15ecd43291eddcdd392c23		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24EE3 14356 bytes
font_02_sfnt_off00027bd0.bin
48b7f7efff76477ba4ed47464509a363e5ec1a16ef8fc2b062f67ea07f29fefd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27BD0 14580 bytes
font_03_sfnt_off0002a6f1.bin
9fb066e8dd9e13675a70449422629d2a78ff10b801f2176493350c1e671b396c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A6F1 7164 bytes
font_04_sfnt_off0002bbd8.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BBD8 6084 bytes
font_05_sfnt_off0002cb6d.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CB6D 3752 bytes

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