Malicious PDF — malware analysis report

Static analysis result for SHA-256 e667390aaca51ae7…

MALICIOUS

PDF

42.5 KB Authoring application: LibreOffice Draw First seen: 2020-09-24
MD5: ce24752b082d86537194038b99c57a40 SHA-1: f4650f7b129fcc2de71438eb135fcb3d8eacadc6 SHA-256: e667390aaca51ae745cb4b0e030f9edbb05ffd9dcf663d9bc35aab3339586af3
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, as detected by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF files hosted on different domains, suggesting a link farm or a distribution mechanism for further malicious content. The ML classifier and ClamAV detection further support its malicious nature, classifying it as phishing or malware. No scripts were extracted, but the structure implies an attempt to redirect the user to malicious resources.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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.
  • 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://richbassviolin.com/uploads/1/3/0/3/130313188/mudamopuzega.pdf In PDF document text
    • http://green-ct.com/uploads/1/3/0/5/130551089/taxitomiv.pdfIn PDF document text
    • http://wibier.nl/uploads/1/3/0/4/130436513/rojodipe.pdfIn PDF document text
    • http://easternmedia.ca/uploads/1/3/0/6/130603909/juzif.pdfIn PDF document text
    • http://prolinelifepharmaceutical.com/uploads/1/3/0/5/130590663/64b8ea08e8b0.pdfIn PDF document text
    • https://sugewisu.weebly.com/uploads/1/3/0/4/130483271/5725434.pdfIn PDF document text
    • https://dolegazori.weebly.com/uploads/1/3/0/3/130313746/timuzamuzoritijus.pdfIn PDF document text
    • http://wenebe.superstudy.ru/uploads/2020/01/28/vokor.pdfIn PDF document text
    • http://antivirussguardservice.xyz/uploads/2020/01/27/96469173bd8.pdfIn PDF document text
    • http://1001edrutherford.com/uploads/1/3/0/5/130544110/wuxatibibig.pdfIn PDF document text
    • http://africancatclub.com/uploads/1/3/0/4/130483737/8249776.pdfIn PDF document text
    • https://fozepitiv.weebly.com/uploads/1/3/0/6/130604036/xabolo_gutizodusufosiw_sovomakogusiker_wovomuzebug.pdfIn PDF document text
    • http://fewigibine.swiftfoxit.tech/uploads/2020/01/27/2368358.pdfIn PDF document text
    • http://lobijeseti.suot.pro/uploads/2020/01/27/fumusapeli.pdfIn PDF document text
    • http://wanderlust-girl.com/uploads/1/3/0/5/130588343/5ccd9e45e975.pdfIn PDF document text
    • https://tazelojovizazad.weebly.com/uploads/1/3/0/4/130483741/mofevurakupewaju.pdfIn PDF document text
    • https://zolelajemexif.weebly.com/uploads/1/3/0/2/130270833/zizen-vuvezovim.pdfIn PDF document text
    • http://rachelheater.com/uploads/1/3/0/2/130288486/7421535.pdfIn PDF document text
    • http://duzutot.osada.fun/uploads/2020/01/29/jafugobasene.pdfIn PDF document text
    • http://urfacefix.com/uploads/1/3/0/5/130588872/130588872.html#the+red+tent+torrentIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000015b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15B5 9172 bytes
SHA-256: 1f5e18694d692083ed08645efc2f263956dfc7200520cfdb5e90076e0580b525
font_01_sfnt_off00005cd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CD9 16640 bytes
SHA-256: 75a001a6a8f15397936a8e26ccaca996903a3504da7109047014097407cd22d3