Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5ece913e5964ab0…

MALICIOUS

PDF

185.2 KB Created: 2015-07-29 07:58:57 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: beff577b88f2c6599062681935bec0eb SHA-1: 300b2651eea0e8f1a08098fbb656262d4fcc2146 SHA-256: a5ece913e5964ab00428522afdc794f97f4eb35b54fd1940d76228e734558e86
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector. The presence of this link suggests the document is designed to lure users to a potentially harmful website. No scripts were extracted, and the document body was not fully parsable, limiting further analysis of the exact payload.

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=audi+mmi+2g+digital+road+map+russia+2013+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4234/4234745_vuykroyki_dlya_barbi_v_naturalnuyu_velichinu_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4234/4234855_dj_vkontakte_skachat_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4193/4193050_programma_vneurochnoy_deyatelnosti_v_nachalnoy_shkole_po_fgos.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a5cb.bin
b9656c2eb260f57f2dee8481985aad6ce0149924ea0b7d879c3efbcff4983eec		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A5CB 7240 bytes
font_00_sfnt_off00023e30.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23E30 3556 bytes
font_01_sfnt_off00024bb3.bin
9265965526700641ffcb3c35ba853a68ba0a57acfdc000aa7f2d81323d7f97eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24BB3 15096 bytes
font_02_sfnt_off00027a4b.bin
efe68de61a8b15a0a3132c51ab1fb2185de5fdde5f3646563d87d7f926db2bce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27A4B 14744 bytes
font_04_sfnt_off0002baec.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BAEC 6084 bytes
font_05_sfnt_off0002ca81.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CA81 3752 bytes

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