Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb0a6bd7b1312c34…

MALICIOUS

PDF

47.6 KB Authoring application: Poppler-utils
MD5: 6993192cda0626efeb110c1b6bf028e6 SHA-1: 0f1a7f979428eba717d84c84e17ffdd376d9053e SHA-256: cb0a6bd7b1312c34fec9df8ac4c6a5880b30733a02cc44b3b17859bbc9ce7390
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Phishing:Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF files hosted on different domains, suggesting a link farm or a distribution mechanism for further malicious content. The ClamAV detection also flags this as a phishing-related threat. No scripts were extracted, and the document body contains garbled text and some of the URLs, reinforcing the link-based attack pattern.

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://oasismethod.com/uploads/1/3/0/7/130738973/naxitixowa.pdf
    • http://summitcityguitartraining.com/uploads/1/3/0/5/130540293/lulidananumaketidib.pdf
    • http://boxuzog.mixglue.com/uploads/2020/01/28/zepajiseraseg_wofesisigutu.pdf
    • http://caddielands.com/uploads/1/3/0/5/130588418/firuro.pdf
    • http://coldchaos.com/uploads/1/3/0/6/130639842/figisevubuv.pdf
    • http://arcadiagardensllclandscapinganddesign.com/uploads/1/3/0/3/130323594/130323594.html#marina+primadonna+mp3

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000115d.bin
e9f02d3258851255a22c98b68cb0590348210e5bc936c19dd4d3fc6ed6649d36		 pdf-font-stream PDF embedded font (sfnt) at offset 0x115D 11404 bytes
font_01_sfnt_off00006ba6.bin
cbf5504d8fd4c3f56d1dd58d5a5b8a786deb660dc2b7b6ab030cd379e1d67b0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BA6 23296 bytes

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