Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad145165bb7413ce…

MALICIOUS

PDF

32.9 KB Authoring application: Mobipocket Creator
MD5: d0c3514318fd59ab8d8f5c7a8427fffb SHA-1: d4f5a5eaf3349ff9df5f687aad91594427bf75dc SHA-256: ad145165bb7413cec4bff3cdf07b44dd01932302c61f3d7788f02232edb82428
128 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF files, a technique often used for SEO poisoning or to distribute malicious content. ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious classification. The presence of a visual download button suggests a user-driven interaction to initiate the download of these linked files.

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://msb-art-integration.com/uploads/1/3/0/5/130588982/gerekolonaw-sejuki-nulowo.pdf
    • http://mycslab.com/uploads/1/3/0/5/130550679/6710524.pdf
    • http://2chickschatabouteggs.com/uploads/1/3/0/6/130621854/pozawanadibudobuga.pdf
    • http://oalkadi.com/uploads/1/3/0/4/130476873/9969070.pdf
    • http://datinglovers.store/uploads/2020/01/28/ff20af6d6.pdf
    • http://audiostart22.icu/uploads/2020/01/28/tifiroreb-rolonel-rizarewifoxegaz.pdf
    • http://neokundalini.org/uploads/1/3/0/6/130620412/130620412.html#chal+chaiya+chaiya+dj+remix+song

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000010db.bin
f9fe86cd11dbbddc671c2e952362ba6a8883fa00b56a48f4f539c65ba8d31397		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10DB 7676 bytes

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