Malicious PDF — malware analysis report

Static analysis result for SHA-256 6eeaf815a2f939c7…

MALICIOUS

PDF

39.6 KB Created: 2020-03-26 09:23:48 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 574b3415899be4d5e2b5a607f241805e SHA-1: 1c45dc74bd22585f1f8f276eeb634dbbe74bf6c2 SHA-256: 6eeaf815a2f939c7a8cbd2b374f50778124c6ff9059bb3b92804b156dd9af395
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a large number of embedded external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. These links, such as http://chuzhappy.com/uploads/1/3/0/5/130551008/130551008.html#palabras+de+despedida+por+alumnos+de+sexto+grado, likely serve to redirect users to malicious websites or to manipulate search engine results. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://chuzhappy.com/uploads/1/3/0/5/130551008/130551008.html#palabras+de+despedida+por+alumnos+de+sexto+grado
    • http://reclaimingalostsoul.com/uploads/1/3/1/0/131069987/lenisagiw_rujarobifegu_danozu_sepex.pdf
    • http://journeywithjonas.org/uploads/1/3/0/5/130589198/49a4fa0a68fde2.pdf
    • http://www.alexandsharif.info/uploads/1/3/0/4/130490117/gizimaxufug.pdf
    • http://catapultpartners.com/uploads/1/3/0/4/130483806/sozimosafer.pdf
    • http://eliteeffect.org/uploads/1/3/0/4/130483364/ed4baf3509002b7.pdf
    • http://wildmillers.com/uploads/1/3/0/6/130604949/guluzowi.pdf
    • http://cofhhe.org/uploads/1/3/0/7/130738883/9901610.pdf
    • http://adpfilmz.com/uploads/1/3/0/3/130312952/9214247.pdf
    • http://www.jasminempls.com/uploads/1/3/1/0/131069766/28cece1325b2.pdf
    • http://konasunsets.net/uploads/1/3/0/9/130968935/jipowimojamipu.pdf
    • http://www.lovingyourselfwell.com/uploads/1/3/0/3/130379104/vazelovavuxowejun.pdf
    • http://www.poshgroom.com/uploads/1/3/0/7/130739260/jamirudo.pdf
    • http://awakenaddictiontreatment.com/uploads/1/3/0/5/130590133/787dd891d.pdf
    • http://wishaloo.com/uploads/1/3/0/6/130620745/revodenova.pdf
    • http://coxinspections.net/uploads/1/3/0/2/130289585/luxuve.pdf
    • http://heyitstaay.ca/uploads/1/3/0/5/130540401/7359870.pdf
    • http://thechurchoftheholycity.com/uploads/1/3/0/8/130815303/visomolowegi.pdf
    • 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_off00007093.bin
e0ff786fc9f0614671073be3ebabee84f79aa71a1e2abee46e4dde72b20e6b44		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7093 8468 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.