Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ee9c6c6c059c0ee…

MALICIOUS

PDF

46.9 KB Created: 2020-03-20 15:32:09 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 10eb7584a8edff94194c1557779b1bb9 SHA-1: d43792d9c61298fd612745a8c94be345eb09330a SHA-256: 9ee9c6c6c059c0ee5aa434658518a136fda71d344667b453cc640f165b2cca5e
94 Risk Score

Malware Insights

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

The PDF contains a large number of external links, a technique often used for SEO manipulation or to distribute further malicious content. The ML classifier strongly indicated maliciousness. No scripts were extracted, but the sheer volume of outbound links suggests a malicious intent to redirect the user to potentially harmful sites.

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://roadshowarchitects.com/uploads/1/3/0/5/130589180/130589180.html#sentido+inverso+ejemplos
    • http://www.dairnler.com/uploads/1/3/0/6/130622080/f42e3419f59b.pdf
    • http://www.fbgstargazingshop.com/uploads/1/3/0/5/130551137/keromumaj.pdf
    • http://successfulperception.com/uploads/1/3/0/6/130621228/juromuvokoxa-vunowezimaxiles.pdf
    • http://mta-sts.mail.findyourwest.com/uploads/1/3/0/7/130776756/1874503.pdf
    • http://thewanderingpigs.com/uploads/1/3/0/6/130604355/53427cb2b7463e.pdf
    • http://golfviewvillaflorida.com/uploads/1/3/0/5/130539092/b107c871da2.pdf
    • http://ooredooiraq.net/uploads/1/3/0/3/130313176/nisatur.pdf
    • http://laucandrique-en.com/uploads/1/3/0/6/130604090/doxurugexedon.pdf
    • http://dcexploration.org/uploads/1/3/0/7/130776065/f2f992330b33.pdf
    • http://maryannegrimmett.com/uploads/1/3/0/8/130814845/pesosuxeze.pdf
    • http://holyfamilylearningcenter.com/uploads/1/3/0/5/130589310/384037.pdf
    • http://www.brandwright.biz/uploads/1/3/0/2/130289623/5b4c5179880a.pdf
    • http://www.leilabaradarandance.com/uploads/1/3/0/7/130738629/nobumakawuno.pdf
    • http://lunacleaning.net/uploads/1/3/0/2/130273983/zeduvilofinorel.pdf
    • http://mx.ethosacademy.org/uploads/1/3/0/5/130590538/c4eac395f0d9372.pdf
    • http://adivasdreamjewelry.store/uploads/1/3/0/6/130604176/ganiwasuputat.pdf
    • http://webmail.masoncitychristian.com/uploads/1/3/0/6/130640105/rimafowagi.pdf
    • http://better-building.com/uploads/1/3/0/6/130620512/d58d8f1779faf9.pdf
    • http://zipagility.com/uploads/1/3/0/8/130873975/7861791.pdf
    • http://resucet.store/uploads/1/3/0/5/130550741/5749777.pdf
    • http://nutritionniste-nantes.fr/uploads/1/3/0/7/130740087/lawemesutonodiporaw.pdf
    • http://www.vpn.erwinandsons.com/uploads/1/3/0/6/130604537/50e5490b124f.pdf
    • http://www.chillbucketproductions.com/uploads/1/3/0/8/130813786/xawef-tepiwenawuzazu-muwaralot.pdf
    • http://marianelaforest.com/uploads/1/3/0/8/130813618/b6d113524fbd9.pdf
    • http://marianelaforest.com/up
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000081a4.bin
8ce2392c6be560ee12282266837e3a075db0ca45b096bc779bbca824d0552353		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81A4 9044 bytes
font_01_sfnt_off0000a2b5.bin
e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA2B5 2652 bytes

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