Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce3a0121aaca9a40…

MALICIOUS

PDF

42.4 KB Authoring application: pdf-parser
MD5: 17d6d5b988d04743e5e9cd8629378d3a SHA-1: 47b5f6bde5b696d003a3d0bd822f2d91febea92b SHA-256: ce3a0121aaca9a40342521a0585abdd1188ea4ddf51cb9fca34e406e01e49cf4
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' heuristic, suggesting a phishing or malicious content distribution attempt. The presence of a 'SE_DOWNLOAD_BUTTON' heuristic further supports a lure-based attack. ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' confirms the malicious nature. The document body, though heavily obfuscated, contains references to URLs that are likely part of the link farm.

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://hello-baby-toys.com/uploads/1/3/0/5/130551904/6ab0b19.pdf
    • http://koreanchurchofmemphis.org/uploads/1/3/0/3/130379428/masize.pdf
    • http://cleverchange.org/uploads/1/3/0/5/130539267/suxuvosimoso.pdf
    • http://calvarybconline.net/uploads/1/3/0/2/130273982/4215182.pdf
    • http://casemedicine.org/uploads/1/3/0/5/130589402/d51d63e509ff84.pdf
    • http://zamo.chaika-yalta.com/uploads/2020/01/29/roputunaku-likovujuv-zunara.pdf
    • http://nursingarmpillow.com/uploads/1/3/0/6/130605075/130605075.html#marijuana+horticulture+fundamentals+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011db.bin
a6d50bf389b5e468155d65cd9b9777285f1fd6739bac8a59bd5ee1ada8cf7125		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11DB 9964 bytes

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