Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c8202018ad2db5a…

MALICIOUS

PDF

43.0 KB Created: 2020-03-22 02:18:00 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: ae65bcf962e01ffe3086381116ce5689 SHA-1: 5d3de975708ce5d77efa7a22ee6dc949a61a8622 SHA-256: 9c8202018ad2db5ac8cab073ffb3a91fd3e8d7941d3f1b7a7d2ecef83ec9113b
96 Risk Score

Malware Insights

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

This PDF document employs a link farm technique, embedding numerous external links to various domains. The primary lure appears to be a 'Solucionario fisica 2 bach anaya', suggesting an attempt to attract students seeking academic resources. The document's structure and the high volume of outbound links strongly indicate a malicious intent to redirect users to potentially harmful content hosted on these external sites. No scripts were extracted, and the document body itself is heavily obfuscated.

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://timeframingconsulting.com/uploads/1/3/0/7/130775920/130775920.html#solucionario+fisica+2+bach+anaya PDF link annotation
    • http://deltaescapenow.com/uploads/1/3/0/6/130604458/zisovurivun_kamikelo_jojobewix_fegene.pdfIn PDF document text
    • http://hiddenoakscontractingservices.com/uploads/1/3/0/8/130813797/sibubik_wizofabuxar_jorivupipeb.pdfIn PDF document text
    • http://integratingleadership.com/uploads/1/3/0/8/130813054/0f5406617e04b2f.pdfIn PDF document text
    • http://hostmaster.patrickhawkins.com.au/uploads/1/3/0/4/130436285/rogigepotole.pdfIn PDF document text
    • http://www.professormichaelgreer.com/uploads/1/3/0/4/130476493/8974466.pdfIn PDF document text
    • http://www.bucharestinthebeltway.com/uploads/1/3/0/8/130874437/gelopopa.pdfIn PDF document text
    • http://filoulefoufou.com/uploads/1/3/0/2/130289724/dc741d.pdfIn PDF document text
    • http://wowees.com/uploads/1/3/0/6/130639036/riparelulaki.pdfIn PDF document text
    • http://bisforbravo.com/uploads/1/3/0/7/130740292/tunavipevuku.pdfIn PDF document text
    • http://liveandlovenpdfree.com/uploads/1/3/0/5/130588606/bcb4d81.pdfIn PDF document text
    • http://greenhandgardens.com/uploads/1/3/0/6/130620828/logavanatejuxojijede.pdfIn PDF document text
    • http://ntwstudioart.com/uploads/1/3/0/5/130544746/nevivalu_xalugesela_diwefotezubufi.pdfIn PDF document text
    • http://mx.freeplantingplans.com/uploads/1/3/0/6/130620888/719ef6d.pdfIn PDF document text
    • http://www.leadinghrsolutions.com/uploads/1/3/0/5/130589042/e0954fda.pdfIn PDF document text
    • http://stockbroker-fraud-lawyer.com/uploads/1/3/0/2/130272232/b111d064350.pdfIn PDF document text
    • http://ribligion.com/uploads/1/3/0/7/130776401/totogota.pdfIn PDF document text
    • http://kristiwaits.com/uploads/1/3/0/4/130476035/bezejilinor.pdfIn PDF document text
    • http://larissa.studio/uploads/1/3/1/1/131163691/rajewalepi_zumowuzorigut.pdfIn PDF document text
    • http://kcufti.com/uploads/1/3/0/3/130313671/fufuzabazaratinib.pdfIn PDF document text
    • http://namssafety.com/uploads/1/3/0/7/130738955/8582612.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C98 6444 bytes
SHA-256: 1957428794578a072b8983e864e5701b52391162abfb2d6d14c6295fa8a16687
font_01_sfnt_off00007c5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C5A 8828 bytes
SHA-256: c69ba90eb608d9bf4c766f52f8e24d2bbbadea04d57fd17a796d3cefeeeaf63e

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