Malicious PDF — malware analysis report

Static analysis result for SHA-256 e78df3e5b4d7d35d…

MALICIOUS

PDF

36.0 KB Authoring application: Smallpdf Desktop
MD5: 8b0d84dee40e9543dee9862b1eb26eb4 SHA-1: a822cba34184a18e30aebd89b4cb698ae8786a9f SHA-256: e78df3e5b4d7d35d5ed931c7ab57b9accbd3a74f613c2ccf0270287b023f47fd
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF file contains a large number of embedded URLs pointing to external PDF documents hosted on various domains. This technique is often used to create link farms for SEO manipulation or to distribute malicious content. The ClamAV detection of 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or malicious distribution intent. No scripts were extracted from this sample.

Heuristics 3

  • 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
  • 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://gertieandruth.com.au/uploads/1/3/0/6/130620846/fomugewaxikozig.pdf
    • http://rivelazioniprivate.org/uploads/1/3/0/6/130621362/2696409.pdf
    • http://cellarmentour.com/uploads/1/3/0/3/130323581/paxatelumew.pdf
    • http://crankworthymusic.com/uploads/1/3/0/6/130604730/xazumabofavof.pdf
    • http://roxandree.com/uploads/1/3/0/6/130640208/ecdc56c2ced387.pdf
    • http://bikefishski.com/uploads/1/3/0/4/130475892/5073783.pdf
    • http://jungandsisco.com/uploads/1/3/0/6/130620660/kivinerefi.pdf
    • http://salftom.store/uploads/1/3/0/4/130488096/341889.pdf
    • http://nupelicanparty.org/uploads/1/3/0/2/130289799/130289799.html#literary+passages+close+reading+grade+5+scholastic

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000119b.bin
a1ef6256e5bc78383e92594cdc619f5b4f6b118c435ae86b9897238d875508bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x119B 8316 bytes

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