Malicious PDF — malware analysis report

Static analysis result for SHA-256 02fa67dbb864b633…

MALICIOUS

PDF

49.1 KB Created: 2020-04-24 10:43:26 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: c2ac342d3e054a076342b50cf3a53407 SHA-1: 1fa877896a2804ecee284ae46ff2a3a54ca88cca SHA-256: 02fa67dbb864b633203e2398b7871c109210f5807c018c41222f156366d55780
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded external links, identified as a link farm. The primary heuristic indicates a mass of external PDF links, suggesting a potential SEO manipulation scheme or a distribution point for further malicious content. No scripts were extracted, limiting the analysis of direct execution capabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://evitajesthetics.com/uploads/1/3/1/3/131383848/131383848.html#bts+songs++with+album+art
    • http://germanpinscherpuppies.com/uploads/1/3/0/4/130489926/3075344.pdf
    • http://ranitsonrealtygroup.com/uploads/1/3/0/6/130620356/daec3f8.pdf
    • http://dmlifegoals.com/uploads/1/3/0/2/130289551/b6215.pdf
    • http://reporenovators.net/uploads/1/3/0/8/130873902/345510.pdf
    • http://skaffchiq.com/uploads/1/3/0/2/130292179/fusufunipovotiva.pdf
    • http://tailsforsuccess.com/uploads/1/3/0/2/130287401/xenakituv.pdf
    • http://mila-travels.net/uploads/1/3/0/6/130604434/wenolevulunavafim.pdf
    • http://weartwocamps.com/uploads/1/3/0/2/130289327/fosabipuwaxoni-fazejoweniwis.pdf
    • http://badgercreekbookkeeping.com/uploads/1/3/1/3/131398515/7006474.pdf
    • http://componte.com/uploads/1/3/0/7/130738748/rusonujakusikel.pdf
    • http://historyscouts.com/uploads/1/3/0/6/130604585/niwawubelogaludefa.pdf
    • http://lereveildesetoiles.com/uploads/1/3/1/4/131437306/fanowebi.pdf
    • http://thedragonflycatalyst.com/uploads/1/3/0/8/130873769/bafafedabogemigopiri.pdf
    • http://atlantaclassicstees.com/uploads/1/3/0/8/130815097/zexemakebuwose-zitupegali-nebutuxituni.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_off000097d2.bin
eacb6d01462efb24d0869062a989c8d7b6ace203d14b727645b9eeaeae7c58dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x97D2 8500 bytes

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