Malicious PDF — malware analysis report

Static analysis result for SHA-256 498120567e8333e4…

MALICIOUS

PDF

31.5 KB Authoring application: Nitro PDF
MD5: fe36772e222c8a43fc81efc36bf37cd0 SHA-1: b60ad108475e33d5fe4b252f071e45008abc7138 SHA-256: 498120567e8333e47591371f8b71c15889be9a8ddecbdad807828320da5e98f5
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was identified as malicious by ClamAV with the signature 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. Static analysis revealed a large number of embedded external links, indicative of a link farm designed to distribute phishing or malware. The document body contained garbled text and some of the extracted URLs, suggesting a lure or redirection mechanism. The primary attack pattern involves leveraging these links to redirect users to potentially harmful content.

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://bellaandmay.com/uploads/1/3/0/6/130639411/vurudum.pdf
    • http://orlylogistics.com/uploads/2020/01/29/b32dbe9408a126.pdf
    • http://nrsvirtualservicesdev.com/uploads/1/3/0/6/130604105/883c52d6376192f.pdf
    • http://lrg.ky/uploads/1/3/0/4/130488512/xajegavomoxovok_geduteguturewab_xudov_zuwob.pdf
    • http://kohai.moe/uploads/1/3/0/6/130620364/zuwawefenuzorujok.pdf
    • http://elitetalentgroup.org/uploads/1/3/0/5/130550936/9922346.pdf
    • http://mhsmustangs4mustangs.com/uploads/1/3/0/6/130639863/ecee53876124fb.pdf
    • http://carlisle-taxi-number.com/uploads/1/3/0/6/130621429/c32a99db21.pdf
    • http://workerdesigns.com/uploads/1/3/0/6/130604141/e25a5da033cc.pdf
    • http://mycpfc.net/uploads/1/3/0/6/130605194/gezajasigi.pdf
    • http://asiaoutdoors.com.vn/uploads/1/3/0/6/130604166/xajafod_lekevukasurisix.pdf
    • http://thescotchapp.com/uploads/1/3/0/5/130588346/1234928.pdf
    • http://edgelandscapeandmaintenance.com/uploads/1/3/0/4/130436209/130436209.html#aatish+video+song+ing

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012e1.bin
a42ba959711217fc112a13a3c3e6682e63693b510fff7071778aa6093dd7c817		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12E1 7724 bytes

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