Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb0c5d77a0245158…

MALICIOUS

PDF

186.7 KB Created: 2015-07-23 20:08:37 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 013c21594448eeb5fd3f7cabde537e0e SHA-1: 0910953e4a8330909e565912a6c33f3026053bfe SHA-256: cb0c5d77a0245158061b6a1a3a92a7c2287b6644bfbcaf798a1d91dbbcc19f6f
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 strongly indicated maliciousness. The embedded URL points to a suspicious domain, likely serving as a lure for further malicious activity such as phishing or malware delivery. No scripts were extracted, limiting the analysis of direct execution 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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%81%D0%B1%D0%BE%D1%80%D0%BA%D1%83+%D0%BB%D0%BE%D0%BB%D0%BE%D0%BB%D0%BE%D1%88%D0%BA%D0%B8+%D1%80%D0%B0%D0%B9%D1%81%D0%BA%D0%B8%D0%B5+%D0%BF%D0%BE%D1%85%D0%BE%D0%B6%D0%B4%D0%B5%D0%BD%D0%B8%D1%8F&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183248_ir2121_shema.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183202_kursovoy_proekt_po_ventilyacii.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184379_korporativnaya_socialnaya_otvetstvennost_uchebnik_skachat.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000246b0.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x246B0 3556 bytes
font_01_sfnt_off00025433.bin
013689382e0ae4a268693110a77a2268d1254b89943b9f62b3e2d6623b06f92e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25433 14360 bytes
font_02_sfnt_off00028156.bin
6b05b6e8d0c9fcd26135fe47bb9c7d3ac74d1f51c1adee305008552f9f7a0a5e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28156 14588 bytes
font_03_sfnt_off0002ac65.bin
f24675f3d0e1305692bcdc2288e827871682db29462e142191414036a1988bcc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AC65 7164 bytes
font_04_sfnt_off0002c12c.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C12C 6084 bytes
font_05_sfnt_off0002d0c1.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D0C1 3752 bytes

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