Malicious PDF — malware analysis report

Static analysis result for SHA-256 e84c5a7c431e7e68…

MALICIOUS

PDF

39.3 KB Created: 2020-03-29 09:46:05 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 9594901d10d524339047df7253891aa2 SHA-1: 76473c11023366dfbb0b260ffa683a8142db3488 SHA-256: e84c5a7c431e7e68d20d519069475ea2e8ca0077a4eb478f35a13fbb76e3ed04
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified as a PDF link farm. The document body text, though partially corrupted, includes the phrase 'Ensayo de la pelicula te doy mi alma' and references the authoring application 'wkhtmltopdf', suggesting a lure to content related to a movie. The primary heuristic indicates an external URI pointing to a related HTML file. The numerous linked PDFs likely serve to inflate search engine rankings or direct users to malicious content.

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://74-123-75-90.mgwnet.com/uploads/1/3/0/7/130738974/130738974.html#ensayo+de+la+pelicula+te+doy+mi+alma PDF link annotation
    • http://aenea.us/uploads/1/3/0/5/130551166/4236689.pdfIn PDF document text
    • http://hostmaster.canalandrivertours.com/uploads/1/3/0/5/130551369/aaa59ece0e6781.pdfIn PDF document text
    • http://polyticks.net/uploads/1/3/0/5/130540592/0bb9ec226fba081.pdfIn PDF document text
    • http://tantrumcon.com/uploads/1/3/0/6/130621131/tafokazev-kaxitogezapozo-delimepo.pdfIn PDF document text
    • http://www.mygpdelivery.com/uploads/1/3/0/6/130604620/pesurexuvamu.pdfIn PDF document text
    • http://hostmaster.7th-hitchin.org.uk/uploads/1/3/0/9/130969854/5b1e670568a.pdfIn PDF document text
    • http://cameronpoydras.com/uploads/1/3/0/4/130436020/088402d62c0d.pdfIn PDF document text
    • http://www.luctravers.com/uploads/1/3/0/5/130540085/misomopufini_nagugekiwemopu_guzepapuvajowo_komifa.pdfIn PDF document text
    • http://sosrichmond.org/uploads/1/3/0/9/130969026/735781.pdfIn PDF document text
    • http://mystrengthbehavioralhealth.com/uploads/1/3/0/2/130289763/3607793.pdfIn PDF document text
    • http://weinspirewellness.com/uploads/1/3/0/6/130639990/zoliwawe.pdfIn PDF document text
    • http://www.ten40acappella.com/uploads/1/3/0/5/130542860/9ae6cade82f.pdfIn PDF document text
    • http://spinstersguidetodating.com/uploads/1/3/0/6/130620467/nelegapefazenek-jerugemagozi.pdfIn PDF document text
    • http://hiung.net/uploads/1/3/0/8/130813115/6548130.pdfIn PDF document text
    • http://www.coldharbourequestrian.com/uploads/1/3/0/4/130488666/gematawifawime.pdfIn PDF document text
    • http://ixayafoundation.org/uploads/1/3/0/2/130291493/daledevolurobadotud.pdfIn PDF document text
    • http://adelaidehulahoopers.com.au/uploads/1/3/0/2/130289242/6334981.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
🗂 Part of campaign: hiung.net 8 samples

Related samples 2

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

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E4F 8712 bytes
SHA-256: e5b514ae231afb7b97174bb1642d6060de2f2fa9b4fab4e8522d3d5dfde74098

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