Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e5ca915e0905691…

MALICIOUS

PDF

185.4 KB Created: 2015-08-05 13:20:10 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 59939f15a5a803340b1d7263cb4129c9 SHA-1: 95dcfd21eee7ee75c5a4142ce170246268c6bcb7 SHA-256: 5e5ca915e0905691fc59315421751022d3d503db715418bbd8be7ca5eecf3cd7
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by multiple heuristics as malicious, specifically for linking to known malicious redirector infrastructure. The document also advertises cracked software, suggesting a lure for potentially unwanted or malicious downloads. While no scripts were directly extracted, the presence of embedded URLs and the nature of the heuristics strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 3

  • 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.
  • PDF link farm advertises cracked/pirated software medium PDF_CRACKED_SOFTWARE_LURE
    PDF contains many clickable links whose targets use cracked-software, keygen, serial-key, or warez vocabulary. These are SEO-spam lure documents that rank for software-piracy searches and route users to fake 'crack' download pages distributing potentially-unwanted programs, adware, or droppers. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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%83%D1%80%D0%B0%D0%BB%D1%8C%D1%81%D0%BA%D0%B8%D0%B5+%D0%BF%D0%B5%D0%BB%D1%8C%D0%BC%D0%B5%D0%BD%D0%B8+%D0%BE%D1%87%D0%B5%D0%BD%D1%8C+%D1%81%D1%82%D1%80%D0%B0%D1%88%D0%BD%D0%BE%D0%B5+%D1%81%D0%BC%D0%B5%D1%88%D0%BD%D0%BE&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304430_skachat_igru_luntik_uchitsya_risovat_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304431_payday_2_skachat_torrent_na_russkom_ot_mehanikov.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304451_bangkok_hilton_skachat_torrent_v_horoshem_kachestve.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_off000243b2.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x243B2 3556 bytes
font_01_sfnt_off00025135.bin
f7d6935ee4bf5b0e5a744181e10b43e10ab5c1574e030917cb828ef9e69f5d78		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25135 14632 bytes
font_02_sfnt_off00027e76.bin
8c5e5bc4674cee60ec6c1619e60533ff44be00efca6b5f228c587d2f19a61a12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27E76 14520 bytes
font_03_sfnt_off0002a945.bin
ba42cd2b0ada0376f40ab348da92a7ef41ae65483d249be07fdf3e737d9663fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A945 6544 bytes
font_04_sfnt_off0002bbfc.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BBFC 6084 bytes
font_05_sfnt_off0002cb91.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CB91 3752 bytes

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