Malicious PDF — malware analysis report

Static analysis result for SHA-256 a62dfbd5bf6d2e96…

MALICIOUS

PDF

187.3 KB Created: 2015-07-25 14:55:50 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 9b182e887c4e197aa84537e93c8986ea SHA-1: b74806f5794ea76f1030b761207ff4d09cc7e078 SHA-256: a62dfbd5bf6d2e968faa871872f19faafc24c09afc307d338063b5b687df360d
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 link to a known malicious redirector. The URL suggests a lure related to downloading Windows 7 software, likely a phishing or malware distribution attempt. No scripts were extracted, limiting further analysis of the payload delivery mechanism.

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+windows+7+%D0%BC%D0%B0%D0%BA%D1%81%D0%B8%D0%BC%D0%B0%D0%BB%D1%8C%D0%BD%D0%B0%D1%8F+32+bit+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+%D0%BB%D0%B8%D1%86%D0%B5%D0%BD%D0%B7%D0%B8%D1%8F&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192025_videokarta_apcb_m3_94v0.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191589_rezultatuy_gia_po_russkomu_yazuyku_2015_altayskiy_kray.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4204/4204688_prikaz_mvd_rf_200_dsp_ot_12042013_skachat.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002ac9b.bin
c177b3e65663978c7554cffb410ea7b8978d9d08f98611b91e4b45a404268e32		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2AC9B 7712 bytes
font_00_sfnt_off000245c6.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x245C6 3556 bytes
font_01_sfnt_off00025349.bin
b535048bf36f2ab0fbd693f033e16311b0d5d11a63b7c347c93d07b79798ca49		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25349 14660 bytes
font_02_sfnt_off000280be.bin
18058f2a9052c84265d88e76891bb4eab1754f0fa33eee15a1b752f4a14e15aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x280BE 14828 bytes
font_04_sfnt_off0002c37a.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C37A 6084 bytes
font_05_sfnt_off0002d30f.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D30F 3752 bytes

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