Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4a87719a7b1a76b…

MALICIOUS

PDF

48.8 KB Authoring application: Mobipocket Creator
MD5: c94062b44f87afe44b4b858dc91921a2 SHA-1: 538314e7f4de0e457bef9b2d7ddcc8868d0a867b SHA-256: e4a87719a7b1a76be6cce07aaeae9b336e54d0399ec247910c599751c0db2e11
150 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection and ML classifier strongly indicate maliciousness, specifically classifying it as phishing. The embedded URLs are the primary indicators of compromise, suggesting the document's purpose is to redirect users to potentially malicious sites.

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://wekemem.megatest.org/uploads/2020/01/28/tinixituwi.pdf
    • http://smestats.com/uploads/1/3/0/5/130588688/sowup-koxomanepifovu-rekikawes-tezabaxide.pdf
    • http://myuglyduckhome.com/uploads/1/3/0/2/130288594/tipesifa_kikejup_vatoko_notoma.pdf
    • http://baretodo.difmed.com/uploads/2020/01/27/7328eee9602b.pdf
    • https://wufibirexuxolug.weebly.com/uploads/1/3/0/5/130539928/59363.pdf
    • http://gotmohs.net/uploads/1/3/0/5/130590323/414468fc2df491.pdf
    • http://fujo.maryscrittersitter.me/uploads/2020/01/28/7d3778e3463.pdf
    • http://rukot.everumgroup.com/uploads/2020/01/28/660343.pdf
    • http://daz.lux-scent.ru/uploads/2020/01/27/piwunujolelexi_zojusujotemozol.pdf
    • http://lagalguita.com/uploads/1/3/0/5/130588716/785e15a3c9d.pdf
    • http://bazevogi.islamurok.ru/uploads/2020/01/28/fimotiwisipuwimivik.pdf
    • http://kelsweet.com/uploads/1/3/0/2/130271081/bopumitaxosejafi.pdf
    • https://buvajufa.weebly.com/uploads/1/3/0/3/130379155/bc77b2db7c.pdf
    • http://nicole-pellegrino.com/uploads/1/3/0/5/130544009/2dc75.pdf
    • https://pabudolezifitum.weebly.com/uploads/1/3/0/4/130476503/25fb08bb9dee13.pdf
    • http://ziz.turizmtlt.ru/uploads/2020/01/28/1548744.pdf
    • http://mediaprojethaiti.org/uploads/2020/01/29/7b990b0532f8.pdf
    • http://womensbeatuy.net/uploads/2020/01/27/e4d21f0a672fd.pdf
    • http://jessiedaniels.net/uploads/1/3/0/5/130546385/lafasapifiv.pdf
    • http://tovarug.icu/uploads/2020/01/28/rotedenazuzibul_pipiwax.pdf
    • http://asaplawnandlandscaping.com/uploads/1/3/0/6/130620519/130620519.html#kis+kis+ko+pyaar+karoon+full+movie+d
    • http://bazevogi.islamurok.r

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000017cf.bin
b75f09a4baf09330a94776e2a680da96431864336caee61e1fc5bfc68d65d294		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17CF 8436 bytes
font_01_sfnt_off000077b8.bin
4d44434c06ac4b1f61bcef9b8afbbec5e053990b1cf30e0c1ee706cec1faa01a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77B8 16168 bytes

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