Malicious PDF — malware analysis report

Static analysis result for SHA-256 e75716a506c8a58f…

MALICIOUS

PDF

34.0 KB Authoring application: Nitro PDF
MD5: b12e1310dd9b920ad584c3c0a08049a4 SHA-1: fddf2b8a39387c1025942779d620135739c4a965 SHA-256: e75716a506c8a58f9c90d02e36d21676fe26b6872089829452efb172ca508819
128 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm designed to distribute malicious URLs. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or malicious redirection intent. The document body also contains a call-to-action phrase, reinforcing the lure. The primary IOCs are the numerous embedded URLs pointing to potentially compromised domains.

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://artistjacquespepin.com/uploads/1/3/0/5/130551162/ce38e6.pdf
    • http://massagebiarritz.fr/uploads/1/3/0/2/130272509/d501a8cbe10dd.pdf
    • http://rocomobile.net/uploads/1/3/0/4/130436298/3558245.pdf
    • http://ruxizhang.com/uploads/1/3/0/5/130546759/6821280.pdf
    • http://barenaturebeauty.com.au/uploads/1/3/0/6/130605270/cbe618097b269b5.pdf
    • http://tangofilmsla.com/uploads/1/3/0/6/130605312/remufet_regovo.pdf
    • https://genitotofifig.weebly.com/uploads/1/3/0/2/130288594/linazu.pdf
    • http://oakscorp.com/uploads/1/3/0/6/130621165/nexelanowiwujasopite.pdf
    • http://ankezimmermann.ca/uploads/1/3/0/5/130541137/130541137.html#hatchimals+colleggtibles+the+eggventure+game+instruction+sheet

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001200.bin
699e764b7de8438c15c45d0fc6f395074da3294ce7ca9f743249fe93d7d0e736		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1200 8404 bytes

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