Malicious PDF — malware analysis report

Static analysis result for SHA-256 802a4775ee0c7a41…

MALICIOUS

PDF

33.2 KB Authoring application: Mobipocket Creator
MD5: c5b2e5cc84a9541f53a7a167348647bc SHA-1: eafd1c4aff57a7fd82b2c855a5bc40b4e82ff4ba SHA-256: 802a4775ee0c7a4179bd82f85bbf3177f4ceb4741ac97eaf22847b6be1361380
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 as a PDF SEO link farm, with the primary purpose of directing users to other PDF files. The presence of a 'download' call-to-action phrase further supports a malicious intent to trick users into clicking these links. ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall' reinforces the phishing and potential malware delivery nature of this document.

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://mollytriplettphotography.com/uploads/1/3/0/6/130640095/1770808.pdf
    • http://nchonorflight.org/uploads/1/3/0/5/130539350/3142440.pdf
    • http://theroverchasefoundation.com/uploads/1/3/0/3/130313426/zebitusifosomesagoja.pdf
    • http://miwerupo.whoisthatvoice.com/uploads/2020/01/28/zugefuxaro_pogiwime_bimusitot.pdf
    • http://nashobavalleyextractco.com/uploads/1/3/0/3/130323733/130323733.html#graduate+school+recommendation+letter+template+employer

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001063.bin
d80cf7fa3c9d63ecdd5b812c956f07a08daf8addc34fe674ae0da9badbee07a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1063 7552 bytes

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