Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3246923042f7ab0…

MALICIOUS

PDF

187.7 KB Created: 2015-07-24 15:21:44 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: d6560deb37848c94a73c5bfe0c264b7c SHA-1: 6cbe4cbd25c91d97b902035e171105fed42d4944 SHA-256: f3246923042f7ab0040d6f848f53ddb4b95b335ccfc8bdd20e5d329274f1f307
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 from this sample, but the presence of the malicious link strongly suggests a phishing or malware delivery attempt.

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=%D1%88%D0%B0%D0%B1%D0%BB%D0%BE%D0%BD%D1%8B+%D0%B1%D0%B0%D0%B1%D0%BE%D1%87%D0%B5%D0%BA+%D0%B4%D0%BB%D1%8F+%D0%B2%D1%8B%D1%80%D0%B5%D0%B7%D0%B0%D0%BD%D0%B8%D1%8F+%D0%B8%D0%B7+%D0%B1%D1%83%D0%BC%D0%B0%D0%B3%D0%B8+%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://img1.liveinternet.ru/images/attach/c/5//4185/4185411_skachat_besplatno_i_bez_registracii_antivirus_avast_na_1_god.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192008_anton_soya_yemobol_snuy_kiti_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192182_primer_zapolneniya_sestrinskoy_istorii_bolezni.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000248bc.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x248BC 3556 bytes
font_01_sfnt_off0002563f.bin
ed5c439513ddbdf6ade444f8652054c976fd19126b15e83228aa15dc691799c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2563F 15064 bytes
font_02_sfnt_off00028533.bin
742c80d665f4716f9fa6b119509c8c38cf11e33e6cca1ceaf0fbb40f7def3826		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28533 14520 bytes
font_03_sfnt_off0002b00e.bin
827e0488b507bdd4b4e0f0478a5f4a5da9b1cd12729644a9642f4b1ebb34ed54		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B00E 7196 bytes
font_04_sfnt_off0002c4f8.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C4F8 6084 bytes
font_05_sfnt_off0002d48d.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D48D 3752 bytes

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