Malicious PDF — malware analysis report

Static analysis result for SHA-256 c44d14aab3ad03b6…

MALICIOUS

PDF

188.1 KB Created: 2015-07-24 12:09:28 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 27c66c183832159dac94b2bebde34c9c SHA-1: 5393922c456ed9743f30f565f5720c709971565b SHA-256: c44d14aab3ad03b69740d208010ce2e552930358a146444c96dd8e7336ccedd7
152 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics as malicious, including a critical finding for a malicious redirector link. The ML classifier also assigned a high probability of maliciousness. The embedded URL points to a known malicious redirector, indicating the document's purpose is to lure users to a dangerous site. No scripts were extracted, but the presence of a malicious link is sufficient evidence of a phishing or redirection attack.

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-8789485-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8789485-0
  • 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=call+of+juarez+gunslinger+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%B0%D1%8F+%D0%BE%D0%B7%D0%B2%D1%83%D1%87%D0%BA%D0%B0+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%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://img1.liveinternet.ru/images/attach/c/5//4189/4189841_yekzamenuy_po_matematike_4_klass.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191820_marshrut_204_cheboksaruy_sosnovka_raspisanie.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185825_hp_laserjet_1536_dnf_mfp_drayver_skanera_skachat.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002af6f.bin
a678bd9d8c35edeb9ea3c3c7d45c1275e257b6cb9bb412c05506cb399e442f73		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2AF6F 7900 bytes
font_00_sfnt_off000247cb.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x247CB 3556 bytes
font_01_sfnt_off0002554e.bin
8ef9c60f6f39b8c46155953eccc32715b49d2c3aa471cc9bf549024b68d03b71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2554E 15028 bytes
font_02_sfnt_off000283ca.bin
497d8f9aab74dd84f39898be06e129ffd3ca8b4662d7d3b996ebcd12a47e1a2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x283CA 14928 bytes
font_04_sfnt_off0002c6cb.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C6CB 6084 bytes
font_05_sfnt_off0002d660.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D660 3752 bytes

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