Malicious PDF — malware analysis report

Static analysis result for SHA-256 258a6ec3289b6743…

MALICIOUS

PDF

186.8 KB Created: 2015-07-24 00:12:34 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: d1798d261a5cfdef9efe432712b07340 SHA-1: cb180ca7c5b827075145274452a538bafd796e40 SHA-256: 258a6ec3289b6743c1861fcc518272a0cf24b3439a7a7e62bf234ee1be83698c
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical alert for a malicious redirector link. The ML classifier also assigned a high probability of maliciousness. The embedded URL `http://botcraftman.ru/...` is identified as a known malicious redirector, suggesting the document's primary purpose is to lure users to malicious infrastructure. No scripts were extracted, and the document body was truncated, limiting further analysis of the payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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.
  • ClamAV: Pdf.Dropper.Agent-7493790-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7493790-0
  • 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%B0%D0%BD%D0%B0%D1%82%D0%BE%D0%BC%D0%B8%D1%8F+%D1%81%D0%B8%D0%BB%D0%BE%D0%B2%D1%8B%D1%85+%D1%83%D0%BF%D1%80%D0%B0%D0%B6%D0%BD%D0%B5%D0%BD%D0%B8%D0%B9+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+epub&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185347_rabochaya_programma_po_literature_6_klass_merkin_fgos.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185416_skachat_programmu_dlya_vzloma_igruy_avatariya.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184349_fb2_knigi_skachat_besplatno_bez_registracii.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024599.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24599 3556 bytes
font_01_sfnt_off0002531c.bin
7f6f243664058af60f3d40230aa5d42c29c89a0ccf326e049bd7c7fa84c8a62d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2531C 14320 bytes
font_02_sfnt_off00027fdf.bin
aeaea5d8f16dbe14a1501c88e45685114231a0bf436c5df1cb14d604eb723c62		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27FDF 14664 bytes
font_03_sfnt_off0002ab2d.bin
39e8ab7a013583aa888d2b76f7768df13d1fcdb11c1759368cae7d1656d098d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AB2D 7544 bytes
font_04_sfnt_off0002c13f.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C13F 6084 bytes
font_05_sfnt_off0002d0d4.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D0D4 3752 bytes

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