Malicious PDF — malware analysis report

Static analysis result for SHA-256 82d8a7f5112a7521…

MALICIOUS

PDF

185.8 KB Created: 2015-07-25 09:54:10 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 16a971db7c03617c869e24f1d9506b7a SHA-1: 28013e6b93e677c42119a11c3436fdf50e3050d6 SHA-256: 82d8a7f5112a75214212571878afde8b5bd55e76b3608af5f8b47d0b4a000fa6
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a machine learning classifier and contains a critical heuristic indicating a malicious redirector link. This link, http://botcraftman.ru/..., is likely intended to direct users to a malicious site. No scripts were extracted, but the presence of the malicious URL strongly suggests a phishing or malware distribution 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=%D0%9C%D0%BE%D0%B4+%D0%BD%D0%B0+%D0%BC%D1%83%D1%82%D0%B0%D1%86%D0%B8%D1%8E+%D0%B2+%D0%BC%D0%B0%D0%B9%D0%BD%D0%BA%D1%80%D0%B0%D1%84%D1%82+172+%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//4187/4187857_zadaniya_po_matematike_dlya_2_klassa.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4194/4194363_muzuyka_dlya_videomontazha_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192926_proshow_producer_6_skachat_besplatno_na_russkom_yazuyke_torrent.pdf
    • http://www.microsoft.com/typography/fonts/
    • http://www.microsoft.com/typography/fonts/You

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000241d6.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x241D6 3556 bytes
font_01_sfnt_off00024f59.bin
1e50351ee89cc6ac70fe1834cb5e42d93d8e5cc8178c621c97f09ab76f0a98d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24F59 14896 bytes
font_02_sfnt_off00027de8.bin
a5169af7638146fbd7bd6bf68cf07dfcd70adb9c5df84f807190216c667b22c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27DE8 14512 bytes
font_03_sfnt_off0002a8ca.bin
f9277077b6a8625dff6b6cb7f116a7977980b91221bbc3c80c04dfcca278e0c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A8CA 7080 bytes
font_04_sfnt_off0002bd66.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BD66 6084 bytes
font_05_sfnt_off0002ccfb.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CCFB 3752 bytes

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