Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f1101c688f4dc83…

MALICIOUS

PDF

38.7 KB Authoring application: Nitro PDF
MD5: f8fd3030d2c3c2d8fc8e342def2b1805 SHA-1: 2ea070138fcd82051b3198567b02c2145349f2bd SHA-256: 6f1101c688f4dc8341780d4fa7623d3794821f01a855581684cd12b6bd050486
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or distributing further malware. While no scripts were explicitly extracted, the nature of the link farm suggests a mechanism for redirecting users to malicious sites or downloading additional payloads.

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://sfabinghamtonfaithformation.weebly.com/uploads/1/3/0/6/130639977/lupobok_xuzibibiwatejot.pdf
    • http://1simpledownload.com/uploads/1/3/0/5/130590279/varidoxaxenivu.pdf
    • http://melofon.org/uploads/2020/01/28/fewekimumeramozo.pdf
    • http://mortgagesmart.solutions/uploads/1/3/0/2/130288545/nevagewatanef.pdf
    • http://aairresearch.com/uploads/1/3/0/2/130289651/6056388.pdf
    • http://vabagivuwu.omega-parts.ru/uploads/2020/01/27/6988402.pdf
    • http://pevofijoli.mchardcraft.icu/uploads/2020/01/29/cf232a6dc.pdf
    • http://thebasementboardgamecafe.com/uploads/1/3/0/4/130483653/xoxiwumadawajoletu.pdf
    • http://sirinavideo.com/uploads/1/3/0/5/130590507/ffa57ed8.pdf
    • http://10thkind.com/uploads/1/3/0/4/130488884/f27ebe.pdf
    • http://keysforkidsfoundation.com/uploads/1/3/0/5/130550722/zuxiz.pdf
    • http://deardrew318.com/uploads/1/3/0/2/130270942/648b5dbe08ad.pdf
    • http://portlandhighschoolreunion.com/uploads/1/3/0/6/130604775/vukugaduparudoj.pdf
    • http://negovanar.paypal-support-limitted.com/uploads/2020/01/28/guleferuwezur_dadoketepurem.pdf
    • http://adogsworld.be/uploads/1/3/0/4/130435881/b253f60d.pdf
    • http://badgeyourclassroom.com/uploads/1/3/0/6/130621663/naluk.pdf
    • http://refinanceaurora.com/uploads/1/3/0/2/130287837/3892249.pdf
    • http://jkjlawnsprinkler.com/uploads/1/3/0/6/130621947/nogukopaxogotoziko.pdf
    • http://routt4hscholarship.com/uploads/1/3/0/4/130488158/domiluvisusis.pdf
    • http://tehnobay.com/uploads/2020/01/27/lizube-sajisafevofaw-rivigo-vonoketugu.pdf
    • http://alejandrodrago.com/uploads/1/3/0/5/130543740/c99ddd919.pdf
    • http://mlyterdogstudio.com/uploads/1/3/0/5/130589123/bonoxenufe.pdf
    • http://thecheckupapp.com/uploads/1/3/0/6/130639746/130639746.html#tv+choice+competitions+answers+issue+11

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000016f5.bin
1d207d1fe3e3d91629ef5cb19e638e597c9d2f542050e25bf2325e1c12715c4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16F5 9124 bytes

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