Malicious PDF — malware analysis report

Static analysis result for SHA-256 f442e181cac27538…

MALICIOUS

PDF

38.9 KB Authoring application: Solid Converter PDF
MD5: e9997bfb7ba70b9ed63ce8b1cb8fc0cb SHA-1: fd13fab20c78b236e23912335348d2423f31e592 SHA-256: f442e181cac27538067438cc726c971f3a47f5488cdad6ded3c712e7a4492ce7
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to external PDF files hosted on various domains, a technique often used for SEO manipulation or to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. No scripts were extracted from this sample, limiting the ability to determine specific payload delivery mechanisms.

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://www.luciebakes.com/uploads/1/3/0/3/130379466/8556878.pdf
    • http://www.jwstern.com/uploads/1/3/0/7/130775870/tumazetiveruvi_latigamezi.pdf
    • http://mrbugfix.com/uploads/1/3/0/7/130739873/5974024.pdf
    • http://rannistan.com/uploads/1/3/0/6/130620366/tikajidixofatu.pdf
    • http://lizdemigreen.com/uploads/1/3/0/6/130604497/wumudipabalas.pdf
    • http://casahabana56.com/uploads/1/3/0/5/130589085/dugisesole_vazadajamurina_gomivoxo.pdf
    • http://mindmasterssociety.com/uploads/1/3/0/8/130874118/numiwipijibo-bifilenepevaza.pdf
    • http://generousandkind.com/uploads/1/3/0/6/130640029/rupajegilolonux_debupoxe_witujel.pdf
    • http://aislingnaysmob.com/uploads/1/3/0/5/130538953/kaximuxerijizobu.pdf
    • http://mta-sts.redmondcog7.com/uploads/1/3/0/5/130547884/lidasagasu.pdf
    • http://zambiasafarihunting.com/uploads/1/3/0/5/130545882/riwap.pdf
    • http://pakpashtoon.com/uploads/1/3/0/4/130435881/xutividim-xiwizasokawezof.pdf
    • http://moderndespot.com/uploads/1/3/0/6/130621444/zerafagejimaji-xikewovikobexi.pdf
    • http://jacquelinesamantha.com/uploads/1/3/0/5/130589128/5357848.pdf
    • http://aacslpvancouver.com/uploads/1/3/0/8/130814070/7088085.pdf
    • http://andigeloolaw.com/uploads/1/3/0/8/130813786/220fcfb8c3d9.pdf
    • http://bartsbullets.com/uploads/1/3/0/8/130814343/wilisarulowepukopen.pdf
    • http://nhgamebutcher.com/uploads/1/3/0/8/130814462/958615.pdf
    • http://behinddallas.com/uploads/1/3/0/7/130738949/1865454.pdf
    • http://cookesbooks.com/uploads/1/3/0/2/130288488/saxukuladagasavibego.pdf
    • http://truedefensepdr.com/uploads/1/3/0/3/130313087/9462632.pdf
    • http://lisenkalami.com/uploads/1/3/0/4/130488432/3097661.pdf
    • http://vera-b.pleasingfood.com/uploads/1/3/0/6/130639922/130639922.html#livro+nutri%C3%A7%C3%A3o+para+doen%C3%A7a+de+alzheimer+pdf
    • http://generousandkind.com/uploads/1/3/0/6/130640029/rupajegilolonux_debupoxe

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000033bd.bin
8d98b9f789faf78a22f89ff0c4350b11a408b6ed563a6a806652b0c7da76e056		 pdf-font-stream PDF embedded font (sfnt) at offset 0x33BD 10352 bytes

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