Malicious PDF — malware analysis report

Static analysis result for SHA-256 2898d82544dc1dde…

MALICIOUS

PDF

51.1 KB Authoring application: Nitro PDF
MD5: 3ec352ee3cb4de4984d2b0fff4e7bd59 SHA-1: 53e8271498ab8ac0c794ea6f6160085439940d88 SHA-256: 2898d82544dc1dde9c2c8052d6741e5ad18e4fcc92cfb68250be9fd428a4f6ae
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF files, a technique commonly used for SEO poisoning or to distribute malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or malicious distribution intent. The document body, though heavily obfuscated, contains URLs that are also present in the embedded link farm, suggesting these are the primary targets for user interaction.

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://vuxitip.vraonline.ru/uploads/2020/01/27/basalobikanojeze.pdf
    • http://brookevanlaanenpersonalgrowth.com/uploads/1/3/0/5/130542996/malinasiwaw.pdf
    • http://sevenmus7c.com/uploads/1/3/0/3/130323301/furenaf_bodivuvibesitez_dewakulitowok_jebetomazudovo.pdf
    • http://njliupdate.com/uploads/1/3/0/4/130483198/wopigidedepi.pdf
    • http://xaxovetu.begettest15.fun/uploads/2020/01/28/7350912.pdf
    • http://nativologie.com/uploads/1/3/0/5/130551125/20e3ad7.pdf
    • http://xanug.dfd.ru/uploads/2020/01/29/wijuban.pdf
    • http://witabox.viewoptiononline.com/uploads/2020/01/29/resimuvezof.pdf
    • http://waxedbylaurie.com/uploads/1/3/0/3/130323100/7313199.pdf
    • http://arkom.one/uploads/2020/01/29/0252437e.pdf
    • http://diz.fazenda2.ru/uploads/2020/01/27/1786869.pdf
    • https://revajosojukeja.weebly.com/uploads/1/3/0/4/130436258/kavokaw.pdf
    • http://maxbrandenburg.com/uploads/1/3/0/6/130620887/xidamuxonipuxiduz.pdf
    • http://nichellerenee.solutions/uploads/1/3/0/5/130538995/130538995.html#flight+simulator+2017+game

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000013b4.bin
977dfadd769b771f67ddf2109a2f6219e8a6fa86d354b2a12f9c6de29b596e09		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13B4 9424 bytes

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