Malicious PDF — malware analysis report

Static analysis result for SHA-256 cff46e2387402cb9…

MALICIOUS

PDF

186.2 KB Created: 2015-07-23 20:36:29 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: fc6d0f2ef3af0f2063ca44c3f980e65e SHA-1: 08a5a6ecced43e336b7b2ea937f089bc7934b71f SHA-256: cff46e2387402cb921afa7b7ef8e197624fbea05e4babbce52c4b985a93c0e3a
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document was flagged by a machine learning classifier and contains a critical heuristic indicating a link to known malicious redirector infrastructure. The embedded URL http://botcraftman.ru/... is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site. No scripts were extracted, and the document body was truncated, limiting further analysis of the specific lure.

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%BA%D0%BB%D1%8E%D1%87+%D0%BF%D1%80%D0%BE%D0%B4%D1%83%D0%BA%D1%82%D0%B0+%D0%B4%D0%BB%D1%8F+windows+7+%D0%BF%D1%80%D0%BE%D1%84%D0%B5%D1%81%D1%81%D0%B8%D0%BE%D0%BD%D0%B0%D0%BB%D1%8C%D0%BD%D0%B0%D1%8F&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184421_obrazec_zayavleniya_na_uderzhanie_iz_zarabotnoy_platuy.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184352_skachat_spidhak_dlya_kss_v34.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184419_godovaya_kontrolnaya_rabota_po_biologii_8_klass_s_otvetami.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a88f.bin
c3a23a524b41dc48db1ecc544ec3c580bad05d7a1a30b53cc38d021fbca80e0a		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A88F 7588 bytes
font_00_sfnt_off00024246.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24246 3556 bytes
font_01_sfnt_off00024fc9.bin
d6de7dcb441d62a8cfbf41ec9a4a139f689b09a1dcbd5e0e74e5ea064a1a299d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24FC9 14564 bytes
font_02_sfnt_off00027d6f.bin
28440ea31829d1fc9935e7666e82b61475c98ae4ec9400adc9be9bdf8cdef5b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27D6F 14584 bytes
font_04_sfnt_off0002bedf.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BEDF 6084 bytes
font_05_sfnt_off0002ce74.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CE74 3752 bytes

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