Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfa599942c6e8b7e…

MALICIOUS

PDF

38.3 KB Created: 2020-04-25 07:20:49 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 696955de21f0dcc8c65ef9d9a127c52b SHA-1: 05d37fb7594916e2b6faefa0c49dd9e24c004b1b SHA-256: cfa599942c6e8b7ef9d9db0466266bf1dcac855198657bac39bc328943e43052
62 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. These links point to various PDF files hosted on different domains, suggesting a link farm or distribution mechanism. The document body is heavily obfuscated, but the presence of the URL 'http://bhsfineartsboosters.org/uploads/1/3/1/4/131406294/131406294.html#personal+space+worksheets+pdf' indicates a potential lure related to worksheets. The primary attack pattern is likely to lure users into clicking these links, which could lead to malicious content or further exploitation.

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.
  • 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://bhsfineartsboosters.org/uploads/1/3/1/4/131406294/131406294.html#personal+space+worksheets+pdf
    • http://designisdesign.net/uploads/1/3/0/7/130738796/2602103.pdf
    • http://joshuahollins-ucourt.net/uploads/1/3/0/2/130270997/4726537.pdf
    • http://innovatorsofpoprocksociety.com/uploads/1/3/0/4/130476013/jesokelazufaz.pdf
    • http://amouremhair.com/uploads/1/3/0/2/130273944/4270302.pdf
    • http://elcellerdesarria.com/uploads/1/3/1/4/131483154/349af995.pdf
    • http://flaxpitsframpton.net/uploads/1/3/0/9/130969179/5689257eb454.pdf
    • http://agreatfence.net/uploads/1/3/0/4/130483325/5e8ef877ca8.pdf
    • http://khmerkampucheakrom.org/uploads/1/3/0/8/130874457/9918215.pdf
    • http://nswdgred.com/uploads/1/3/0/6/130620633/1500357.pdf
    • http://anactofreason.com/uploads/1/3/0/5/130588983/dapeso.pdf
    • http://novamegamall.com/uploads/1/3/0/7/130775219/fidibaxamevo.pdf
    • http://kirtananandkaur.com/uploads/1/3/1/4/131407890/df362f.pdf
    • http://gulliverfieldstudiesprogram.org/uploads/1/3/0/2/130291646/motarur-kadirivon.pdf
    • http://stephaniestrenger.com/uploads/1/3/1/4/131452842/dabunugojubit.pdf
    • http://lifelonglearningmanagementdevelopment.com/uploads/1/3/0/4/130476976/c3402.pdf
    • http://kirtananandkaur.co
    • 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_off00006bc5.bin
7426072801e042f2f212cc27f37c76d4bb9b890a8f16e80b5b118812f2f3c5ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BC5 8132 bytes

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