Malicious PDF — malware analysis report

Static analysis result for SHA-256 afcaeec7eb259bcb…

MALICIOUS

PDF

185.7 KB Created: 2015-07-24 04:51:50 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: df0290fccbb1e2d4210e68f04e97912a SHA-1: e7a00d24ebb9f75aa86c7fe8dd55a4e368c5c8c8 SHA-256: afcaeec7eb259bcb2576d9655142c446a4ed94101e1cc8e10921941062425500
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link

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 primary IOC is the malicious URL, which is likely used to deliver a secondary payload or redirect to a phishing site.

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+%D0%BC%D0%B0%D0%B9%D0%BD%D0%BA%D1%80%D0%B0%D1%84%D1%82+152+%D1%81+forge+%D0%B8+modloader&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184646_dnevnik_slabaka_kniga_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187788_adobe_flash_cs6_skachat_torrent_russkaya_versiya.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185445_razdacha_interneta_s_noutbuka_po_wifi_windows_7.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023e09.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23E09 3556 bytes
font_01_sfnt_off00024b8c.bin
a6a4c8d2587ed89af8a8d520b045f7d868c2b326cb1e365e8a71f1b3e2c2d33a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24B8C 15144 bytes
font_02_sfnt_off00027a8e.bin
914241f55e59f357e7b1a5d20d694fbee39275bef9f496ca74fa36046db3b594		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27A8E 14904 bytes
font_03_sfnt_off0002a68d.bin
b4794c385134793c379f82aa8363e91fdeedb681805163ebffd0c38416f970b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A68D 7584 bytes
font_04_sfnt_off0002bcf9.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BCF9 6084 bytes
font_05_sfnt_off0002cc8e.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CC8E 3752 bytes

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