Malicious PDF — malware analysis report

Static analysis result for SHA-256 822dbdf2d739f905…

MALICIOUS

PDF

36.9 KB Authoring application: LibreOffice Draw
MD5: fe8a42747da2eda6ee8e0ea3e3cf990e SHA-1: ab6591f4702735b96f737e5480002d6c4410c6f9 SHA-256: 822dbdf2d739f9050cd5260ef5a35561fe0fffb41b22fcb52ed2ec81270491dd
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. The document body, while containing seemingly unrelated text, also includes these links, suggesting a lure to a link farm designed to redirect users to malicious content. The ClamAV detection further supports its malicious nature, identifying it as Pdf.Phishing.TtraffRobotInstall.

Heuristics 3

  • 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
  • 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://portwingmarket.com/uploads/1/3/0/6/130604125/fodujokukenedot-situgaxixupoxu.pdf
    • https://soromejerex.weebly.com/uploads/1/3/0/2/130272390/9921166.pdf
    • http://zakagazaw.dinerotico.com/uploads/2020/01/28/lepemutiju_vidokosudidu_wisowobavitu.pdf
    • http://travelatyourleisure.com/uploads/1/3/0/5/130539016/gaxupu.pdf
    • http://protetik-hannahsjoholm.com/uploads/1/3/0/6/130621361/paduvujoga_movevapiko_wuliwo_rulojefifi.pdf
    • http://cyclebavaria.com/uploads/1/3/0/5/130589094/130589094.html#shirley+jackson+the+lottery+sparknotes

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001149.bin
b32d48770b192d6e6e976269010746ef637b11115672c365ce92416b28cdb699		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1149 8188 bytes

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