Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc62c7aa6c3585ed…

MALICIOUS

PDF

184.6 KB Created: 2015-07-24 11:14:42 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: d4f27651b063f3b469286c37f5b277d2 SHA-1: fc297a600147d4a90bc8678fb1b09924ab23f270 SHA-256: dc62c7aa6c3585ed18b210d7f14e20803a5d69f809fba6ceee4b6d7da506bb4a
90 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 infrastructure at botcraftman.ru. This indicates the document is likely a lure to direct users to a malicious website for phishing or malware delivery. No scripts were extracted, and the document body was not sufficiently readable to infer further 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%A1%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+stairdesigner+%D1%80%D1%83%D1%81%D0%B8%D1%84%D0%B8%D0%BA%D0%B0%D1%82%D0%BE%D1%80&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191788_kak_uznat_rezultatuy_egye_2015_po_matematike.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4189/4189585_geroi_mecha_i_magii_3_dlya_android_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191438_zapolnennuyy_dnevnik_proizvodstvennoy_praktiki_avtomehanika.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a332.bin
56365a26d150e0eb36c61a06aadea0c3c114084cbc4cb45388985bdeec8b10fd		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A332 7300 bytes
font_00_sfnt_off00023d4a.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23D4A 3556 bytes
font_01_sfnt_off00024acd.bin
43aa3c96a2f4572fad32e9e12369451934eae60b7b4aab9ee31eb89ba5eb5cb8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24ACD 14632 bytes
font_02_sfnt_off0002781f.bin
5e39af10266ae913c20e1a736fe828ff5b0ee82424e68069756908ec95e3104c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2781F 14576 bytes
font_04_sfnt_off0002b889.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B889 6084 bytes
font_05_sfnt_off0002c81e.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C81E 3752 bytes

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