Malicious PDF — malware analysis report

Static analysis result for SHA-256 beb479c69cd16059…

MALICIOUS

PDF

47.2 KB Authoring application: Nitro PDF
MD5: b949aa418b56fca4b3d7c8f64abb5b50 SHA-1: 4490da04564bb410130168b804de622fc9d9ad76 SHA-256: beb479c69cd160593353ce9317a07fdf8a867a157c4b6fe62789471e2c083024
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files hosted on various domains, indicative of a link farm or redirection scheme. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or distributing further malware. The document body content is heavily obfuscated and does not provide clear textual lures.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://canscare.com/uploads/1/3/0/4/130476458/235da5c0d8.pdf
    • http://dpchinesetea.store/uploads/1/3/0/2/130289613/4030976.pdf
    • http://introtoediting.com/uploads/1/3/0/5/130539244/namopivusiluzawila.pdf
    • http://www.coachscott.org/uploads/1/3/0/6/130604441/8c44aa36d64e751.pdf
    • http://hugwear.net/uploads/1/3/0/7/130775476/1477921.pdf
    • http://wcgreen55.com/uploads/1/3/0/5/130543346/1788874.pdf
    • http://natedhill.com/uploads/1/3/0/5/130589159/fimerufixubufewatire.pdf
    • http://theblingbuddies.com/uploads/1/3/0/3/130379354/rotuwox-vumawureker-bidamis.pdf
    • http://gladiatorfs.com/uploads/1/3/0/6/130639121/1944604.pdf
    • http://nanoluge.com/uploads/1/3/0/5/130551920/dufapolonevikuwu.pdf
    • http://ritasbeautysupply.com/uploads/1/3/0/5/130588921/jadoraru_zufosopop_lagutu.pdf
    • http://danceandshine.co.nz/uploads/1/3/0/5/130543538/2b3f055dd2c0439.pdf
    • http://10toestours.com/uploads/1/3/0/5/130588721/2733242.pdf
    • http://fairvotepiercecounty.org/uploads/1/3/0/6/130604098/kulusaxolizululakeji.pdf
    • http://breadin5minutes.com/uploads/1/3/0/5/130544687/a278efa8f6f6.pdf
    • http://hbcphx.org/uploads/1/3/0/9/130969426/130969426.html#how+to+treat+aplastic+anemia+naturally

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d30.bin
ff02a27ce581388080b1126e52fee7abceab3dc25a5fa28b0ed97d293a3c27e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D30 8632 bytes

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