Malicious PDF — malware analysis report

Static analysis result for SHA-256 20050a3b7cb20165…

MALICIOUS

PDF

29.9 KB Authoring application: Mobipocket Creator
MD5: 45616807e76f4d026839bfbcfb64eb1d SHA-1: 685d7f220e22e84079c836452cbe14e8c5be69f8 SHA-256: 20050a3b7cb201657da9bbf066a187a5ebb24bc26c6be7c2606c841b640d4fe7
128 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' strongly suggests a phishing or malicious traffic redirection intent. The embedded URLs are likely part of this link farm, designed to lead users to malicious content or further phishing pages.

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://rrgdigitalmarketing.com/uploads/1/3/0/6/130604306/d6e23a5770.pdf
    • http://koahspearfishing.com/uploads/1/3/0/5/130589998/29d1b560bc708e0.pdf
    • http://queenseasyautocredit.com/uploads/1/3/0/5/130539432/setivekemejuza_zikiladaresevik.pdf
    • http://desaz.firstcatering.ru/uploads/2020/01/28/43a64a7.pdf
    • http://sheaandaloe.com/uploads/1/3/0/5/130588206/2e52a.pdf
    • https://zafojewun.weebly.com/uploads/1/3/0/2/130289558/2326124.pdf
    • http://sunshinecoastcounselling.com/uploads/1/3/0/4/130489564/130489564.html#nightingale+school+wanstead+uniform

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000010be.bin
01fe5d2a3e78d688cc6210f3937b369cb103c76b22e58cb0bcf8334e28e7d95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10BE 7900 bytes

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