Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b24199076b9f43e…

MALICIOUS

PDF

35.1 KB Created: 2020-04-19 06:11:35 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: f0deaeb5985ce353214546fc8ea7b00b SHA-1: 83916f5677b0f8354ce33f353a67bf6103cc61ef SHA-256: 1b24199076b9f43e50ef635cdc34d9c62e8e008a074981a2d4b0ab8f86bb1b4c
72 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to other PDF files hosted on various domains. This behavior is indicative of a link farm or a mechanism to distribute malicious content. The presence of a 'download button' heuristic further supports the idea that the document is designed to trick users into downloading files. No scripts were extracted from this sample, limiting the ability to determine the exact payload.

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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://hlhomes.org/uploads/1/3/0/4/130477492/130477492.html#bill+saunders+guide+series+goose+calls
    • http://houseofburdens.com/uploads/1/3/0/4/130488700/newunu.pdf
    • http://smulhallbuidingservices.com/uploads/1/3/1/1/131163780/6a20d776ee03c0.pdf
    • http://andatrades.com/uploads/1/3/1/3/131383959/bepisegu-virasu-wopinokivu-jegajipasib.pdf
    • http://terribletech.com/uploads/1/3/0/4/130488092/bakixogoz.pdf
    • http://darsanaai.com/uploads/1/3/0/5/130588931/vafujofu_nirixigogevituz_pixusim_jutavaxawoget.pdf
    • http://azprimeservices.com/uploads/1/3/1/4/131410952/mitirozerowenejo.pdf
    • http://azprimeservices.com/uploads/1/3/1/4/131410952/mitirozerowenejo
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000607b.bin
18cf31a165333f5230b2d0e239f6e56ec3646657dc8f0a4302b113e035eeab89		 pdf-font-stream PDF embedded font (sfnt) at offset 0x607B 8356 bytes

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