Malicious PDF — malware analysis report

Static analysis result for SHA-256 8aa277cb756e22d3…

MALICIOUS

PDF

40.8 KB Authoring application: LibreOffice
MD5: 65d7010d1a86462a9cb3e3a60f116035 SHA-1: 6f7e94c40dd80f8783f3274802c8113840a5b99b SHA-256: 8aa277cb756e22d3f3a3a1be1ec7de538399aac110575de62957259b1d6aa3f1
128 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.001 Spearphishing Attachment T1566.002 Spearphishing Link

The PDF contains a link farm and a call-to-action phrase, indicating a phishing or malware distribution attempt. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports this. The embedded URLs point to external PDF files, suggesting a multi-stage download process. The document body text, though partially corrupted, mentions 'Pokemon gba list free download' and includes URLs, reinforcing the lure.

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://nuj.cityglush9.icu/uploads/2020/01/28/vukegud.pdf
    • http://rucomingout.com/uploads/1/3/0/6/130605506/9658534.pdf
    • http://mydragonflyartsstudio.com/uploads/1/3/0/6/130604821/katejis_satonisazuf_ditenekuxa_voreni.pdf
    • http://riversidecountyhistory.org/uploads/1/3/0/5/130588928/130588928.html#pokemon+gba+list+free+download

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001013.bin
a8a72ec8785caa2fb96950258cd2ac8607f7f910f9adaac4e2360045dd49758f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1013 8812 bytes
font_01_sfnt_off00005780.bin
d14030e9bf382f92dbf35d9aa2a7cb0e0e1bd220e737fb62fa229716d1a4892a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5780 16548 bytes

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