Malicious PDF — malware analysis report

Static analysis result for SHA-256 81267b8544fb1b4f…

MALICIOUS

PDF

36.3 KB Authoring application: Scribus
MD5: 642ed2f26bf6f205986c66d07fb1416f SHA-1: d76fbc311933b243921e25fa6db8a98eb238bd63 SHA-256: 81267b8544fb1b4fcc29d4e7038b2b1a85207585e68205742ce533a41b3ae486
128 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified as a link farm, designed to redirect users to other PDF documents. This behavior is consistent with phishing or SEO poisoning tactics. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the malicious classification. No scripts were extracted from this sample.

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://tenantfocusedinteriors.net/uploads/1/3/0/5/130543539/purimerulopubeso.pdf
    • http://dafa888yulekaihu.f18.ebkf.org/uploads/1/3/0/4/130435581/f58ff.pdf
    • http://drfilldental.com.au/uploads/1/3/0/7/130740464/81fc1f8.pdf
    • http://mta-sts.tpexcavate.co.za/uploads/1/3/0/6/130605044/ff2fe072028fc.pdf
    • http://skunkremovalknoxville.com/uploads/1/3/0/7/130740414/vujemow-vulujavoredeva-sizusome.pdf
    • http://www.rrchildrenscentre.com.au/uploads/1/3/0/8/130874451/jukomunevuvune.pdf
    • http://libowangshangyule.f18.ebkf.org/uploads/1/3/0/6/130604198/6796080.pdf
    • http://kcmwebco.com/uploads/1/3/0/7/130738559/wekufototubufox_zuvumuw_mafotiwujeluli_nuloga.pdf
    • http://rearwindowphotography.com/uploads/1/3/0/6/130620337/34a19598b97.pdf
    • http://baldwincapital.com/uploads/1/3/0/8/130813975/taxudarezitijasowiz.pdf
    • http://www.allthingsroe.com/uploads/1/3/0/4/130477028/fa570f9a.pdf
    • http://bevingroup.com/uploads/1/3/0/6/130604497/darokeripe_xixaxirakalo_lebagafo.pdf
    • http://aovave.com/uploads/1/3/0/7/130738911/9e7a2b91532.pdf
    • http://1stpage.co.nz/uploads/1/3/0/7/130775071/82bc33d5fd1a.pdf
    • http://gordoncraigcpa.com/uploads/1/3/0/6/130604470/wudomizigetije.pdf
    • http://christmaswishesbook.com/uploads/1/3/0/6/130604860/xujotajobapogo-kofamoturenelol.pdf
    • http://hostmaster.aiyso.org.uk/uploads/1/3/0/2/130272281/773bf2.pdf
    • http://ketopages.com/uploads/1/3/0/7/130739449/voniropu.pdf
    • http://derekparker.design/uploads/1/3/0/5/130543575/820231.pdf
    • http://mmshop.club/uploads/1/3/0/2/130288559/7eaece1289278d.pdf
    • http://sta-66-99-58-192.ladse.org/uploads/1/3/0/9/130969459/130969459.html#ec6009+advanced+computer+architecture+important+questions+pdf%2A
    • http://ketopages
    • http://www.character.ua.edu/uploads/1/3/0/5/130551125/6446252.pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002cc7.bin
c02b303d71c653f6059e8ffaec0bbbe53bbf35feea70e55fa43f6f1f001b3599		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CC7 7952 bytes

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