Malicious PDF — malware analysis report

Static analysis result for SHA-256 44857dd4e87cee1c…

MALICIOUS

PDF

45.0 KB Authoring application: Solid Converter PDF
MD5: 56e18cc352c0e67114d7ebe223400766 SHA-1: ef5fd98a4e6ed874d01532ecfe3253bbe2a5667e SHA-256: 44857dd4e87cee1c09874ed7f6e728a1f7a1447c48a25c8d6e47cee173f39ed0
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF documents, a technique often used for SEO manipulation or to distribute further malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' strongly suggests a phishing or traffic redirection intent. The heuristic 'PDF_SEO_LINK_FARM' confirms the presence of numerous external links, with 'nordcel.com' being a dominant host.

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://nordcel.com/uploads/1/3/0/3/130313784/rudemuv.pdf
    • http://celestejohnsonlpc.com/uploads/1/3/0/2/130272318/d56af7.pdf
    • http://niguto.karvan-group.com/uploads/2020/01/27/wuxozipumav.pdf
    • http://zexepuvif.naaltae.ru/uploads/2020/01/27/bipikuxopapaw.pdf
    • http://annachojnacka.nl/uploads/1/3/0/6/130621720/kosujabogoxozu.pdf
    • https://tasosepi.weebly.com/uploads/1/3/0/2/130274279/guzozibobuti.pdf
    • http://selkirkoutfitting.com/uploads/1/3/0/6/130604931/f6b563f9ba.pdf
    • http://securityprojects.be/uploads/1/3/0/6/130639760/ledopup-muzabod-xapipufugezavuw-jezilofolameku.pdf
    • https://jotubobomivudu.weebly.com/uploads/1/3/0/6/130605280/xopepebexesubupire.pdf
    • http://celebrationandpartysupplies.com/uploads/1/3/0/5/130550711/vivuwiledenidu-kodireferoj.pdf
    • http://broodjesboke.com/uploads/1/3/0/6/130620645/3f2fc29.pdf
    • http://shop.trgld.yt/uploads/1/3/0/4/130475984/599526.pdf
    • http://waxmeltsbyfrancesca.com/uploads/1/3/0/5/130540874/8451c62b2d8.pdf
    • https://rebifatunuviner.weebly.com/uploads/1/3/0/5/130539797/8730027.pdf
    • http://ridirog.pyro.ru/uploads/2020/01/27/3318383.pdf
    • http://sailingphoenix1.com/uploads/1/3/0/3/130313398/4d88124.pdf
    • https://besexeworun.weebly.com/uploads/1/3/0/4/130435786/xogotutot.pdf
    • http://dotalounge.net/uploads/2020/01/27/zesewokin_barutajosebadef_janelakik.pdf
    • http://greenaccountingservices.us/uploads/1/3/0/2/130291434/texumaseloz_veworibijatugim.pdf
    • http://podollangpis.devsite-1.com/uploads/1/3/0/5/130550848/130550848.html#acetic+acid+state+at+room+temperature
    • http://greenaccountingservices.us/uploads/1/3/0/2/130291434/texumaseloz_ve

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000016ab.bin
5bc08b0d703699f2a9ea46e7bc20a96327e22599387ff2783c7b3f2c19dc7ff5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16AB 9132 bytes
font_01_sfnt_off00007415.bin
cd5b04feeae1aab24d32ec675b888b21b71c4a17e467ce630bfa86e07139397e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7415 2704 bytes

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