Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2e302356d613a81…

MALICIOUS

PDF

32.8 KB Authoring application: Inkscape
MD5: 480ef02bb062a57724e1b3e14532a140 SHA-1: 5ea2c3fdeb0b399e1805a94d8e6af4ce0de2c63e SHA-256: b2e302356d613a814a41d356a61cee24fc133dd032e4b02d8e29436aedd8d742
128 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of external links, many of which point to other PDF files, indicating a link farm for SEO purposes. The heuristic 'PDF_SEO_LINK_FARM' and the ClamAV detection 'Pdf.Dropper.Agent-7846746-0' strongly suggest malicious intent. The presence of a visual download button further supports a social engineering lure. The embedded URLs are likely used to host malicious content or redirect users to phishing sites.

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.Dropper.Agent-7846746-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7846746-0
  • 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://movimentomarianobetania.org/uploads/1/3/0/6/130603773/bupiwudunudasogof.pdf
    • http://clearhrsolutionsd.com/uploads/1/3/0/4/130435941/8c7e87.pdf
    • http://armquiz.com/uploads/2020/01/27/tusuzaw.pdf
    • http://befreeproduction.com/uploads/1/3/0/4/130478663/3e464e773d.pdf
    • http://bulverdepregnancy.net/uploads/1/3/0/6/130639282/wetivuxolaja.pdf
    • http://link2yoo.net/uploads/1/3/0/6/130604529/42536e7ead401.pdf
    • http://americanbenefitsolutions.net/uploads/1/3/0/5/130590122/0edbbc0c.pdf
    • http://vertudevelopment.com/uploads/1/3/0/6/130605267/130605267.html#brother+intellifax+2820+driver

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001124.bin
2f71e1f9002540aaa4a31a0ed4134e6b3289ec9c57597e7a60649299b93f7efc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1124 8144 bytes

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