Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ffc2ca6413acf6f…

MALICIOUS

PDF

185.1 KB Created: 2015-08-05 13:48:56 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: d63aee9cb3fea2193852494ace4eb43f SHA-1: 45b0b70d2ff34acd8f836fb9862179d078790ebb SHA-256: 3ffc2ca6413acf6f03a5e271ddd77695bf7d92f31241335b21c8803eda8fab90
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 points to a domain known for distributing malware. No scripts were extracted, but the presence of a malicious link indicates a likely attempt to lure the user to a harmful site.

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-8758735-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8758735-0
  • 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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+windows+xp+64+bit+sp3+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%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/6//4304/4304518_knigi_na_android_v_formate_apk.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304747_skachat_film_forsazh_3.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304765_street_legal_racing_moduy.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a4c1.bin
7d772d0eceae146245e2b6c30da49e331a4b894a61cbb1fc1437f4020167ab05		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A4C1 7412 bytes
font_00_sfnt_off00023de3.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23DE3 3556 bytes
font_01_sfnt_off00024b66.bin
d977daf6af345e5a8be9944da36142df6612f73c082f6815996b78a1fad60972		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24B66 14696 bytes
font_02_sfnt_off000278db.bin
59778d9ebac8fcea8545860f73fbee33a9112ba199866d491aac5580379d54fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x278DB 14848 bytes
font_04_sfnt_off0002ba7b.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BA7B 6084 bytes
font_05_sfnt_off0002ca10.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CA10 3752 bytes

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