Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fa0676cf7a709bd…

MALICIOUS

PDF

44.5 KB Authoring application: PDF Studio
MD5: 2639c1e54038bc7dcec54ce26fd71a5d SHA-1: 82d957e1e42e4961c1779b78fa2beb8226117fd4 SHA-256: 6fa0676cf7a709bda01a5425e6c779afc5cefbe6299bfe5240a5a922320c2adc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded URLs, identified as a link farm, suggesting a phishing or malware distribution attempt. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier output further support its malicious nature. The document body, though partially corrupted, contains references to educational materials and embedded URLs, reinforcing the lure to download further content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://realestate.vmaprofessionals.com/uploads/1/3/0/6/130639357/a946479216a2ac.pdf
    • http://werenuboj.rus-snow.ru/uploads/2020/01/28/figabiwep.pdf
    • https://fagejalunef.weebly.com/uploads/1/3/0/5/130551697/jabodexasiwasivazu.pdf
    • http://mneronava.com/uploads/1/3/0/4/130483773/vuvugumatedojas.pdf
    • http://lindavandoorn.com/uploads/1/3/0/3/130323375/e50e029d7343.pdf
    • http://vintagehomenewyork.com/uploads/1/3/0/6/130604878/bevexorususixo_samozike.pdf
    • http://progarag.ru/uploads/2020/01/29/7300170.pdf
    • http://rechtspraak-republieknl-aarde.space/uploads/1/3/0/4/130477566/suvokixajexogej-wifid.pdf
    • http://steelcityselectsoftball.com/uploads/1/3/0/5/130541904/6110515.pdf
    • http://kelseyleon.com/uploads/1/3/0/6/130603832/7917702.pdf
    • http://hello-baby-toys.com/uploads/1/3/0/6/130604185/130604185.html#xam+idea+accountancy+class+12+solutions
    • 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_off000012ea.bin
723ff1df5972d32a6c2c7710208f39e8c39a8ba22dc0294ce4faa38cfe3b8d7e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12EA 8380 bytes
font_01_sfnt_off00006586.bin
c4a48ff1e57300ee22d495e6e16285322f9219091bf3f669edd3169ca60df638		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6586 16664 bytes

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