Malicious PDF — malware analysis report

Static analysis result for SHA-256 783ff216a17a790f…

MALICIOUS

PDF

46.2 KB Authoring application: SWFTools
MD5: 6410c3778d6de5571ba48acdf61a3a73 SHA-1: 832ddb89a1d942274dfe165256838489313e1a05 SHA-256: 783ff216a17a790f5a000f5a68293e1416e374f21dd066efa0cd239d2fd838a7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many of which point to other PDF files, suggesting a link farm designed to distribute malicious content. The presence of a 'download button' lure further supports a phishing or malware distribution attempt. ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' strongly indicates malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://msbraysclasses.weebly.com/uploads/1/3/0/4/130435594/5051673.pdf
    • http://bemapifor.yusufkalayci.com/uploads/2020/01/28/8a49f765cc2840d.pdf
    • https://fufubumutop.weebly.com/uploads/1/3/0/4/130436473/xarosunidiwi.pdf
    • http://mountainzonewaterpolo.com/uploads/1/3/0/3/130379411/xobogotari.pdf
    • http://social-promotion.ru/uploads/2020/01/27/a2065622e.pdf
    • https://zajatute.weebly.com/uploads/1/3/0/5/130589264/kuximedos.pdf
    • http://eco2magnesia.com/uploads/1/3/0/2/130273582/6e20a5225579ad.pdf
    • http://xeruw.ethereumbanking.net/uploads/2020/01/27/kitetanijogevopa.pdf
    • http://kyterapia.com/uploads/1/3/0/4/130436402/4e71f3a.pdf
    • http://rigakud.supergeoafrica.net/uploads/2020/01/28/2476769.pdf
    • http://aandeapothecary.com/uploads/1/3/0/5/130550716/9117338.pdf
    • http://kixa.dddich.ru/uploads/2020/01/28/7627516.pdf
    • http://bitcoinserv.co.uk/uploads/1/3/0/2/130271073/wulamonerurid-gabijutekinike.pdf
    • http://xukuzema.lzsx.online/uploads/2020/01/29/rujelobekaz.pdf
    • http://shopwasilclothing.com/uploads/1/3/0/5/130540063/rusixadisofak.pdf
    • http://bellafurdesigns.com/uploads/1/3/0/6/130621864/660776.pdf
    • http://vuj.cryptoinfosys.com/uploads/2020/01/28/cf2f45275c3d265.pdf
    • http://wwidbq.com/uploads/1/3/0/4/130489081/radiwevamowi.pdf
    • http://banyanbenefits.com/uploads/1/3/0/5/130539054/3674743.pdf
    • http://apricotbearcakes.com/uploads/1/3/0/5/130543588/bikedowisofobu.pdf
    • https://debosazimorefix.weebly.com/uploads/1/3/0/6/130605405/munexa.pdf
    • http://bunut.topmanicure.ru/uploads/2020/01/29/kizekifalelez-zanimoxiz-bejusa.pdf
    • http://telltalegift.com/uploads/1/3/0/3/130323957/baa820.pdf
    • http://absystemsllcscam.com/uploads/1/3/0/6/130604369/130604369.html#chapters+mod+apk+1.+5.+4
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000016be.bin
cd46e2db1239a1a1a0f182e2d2aefb81d483bc6548db4c8b3a221ed9ec2fa41e
pdf-font-stream PDF embedded font (sfnt) at offset 0x16BE 7968 bytes
font_01_sfnt_off00006d84.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D84 16036 bytes