Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ae1adc9e00e4966…

MALICIOUS

PDF

39.9 KB Created: 2020-06-04 22:17:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-04
MD5: 701a6ebfeaf9aed1fce49dea5d661a98 SHA-1: b752ccf8411f6d580b3b42e44be3a99fada15940 SHA-256: 8ae1adc9e00e49660fd3bf8b5a3964d45d4cda3182617d0613f0d0a094c773a9
96 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links to other PDFs, a technique often used for SEO poisoning or to host malicious content. The primary lure appears to be a fake download for 'Final Fantasy Tactics'. The document body contains a mix of obfuscated text and URLs, including the primary lure URL and a link farm of other PDF files. No scripts were extracted, but the extensive linking suggests a multi-stage redirection to malicious content.

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://f5.undesirable.us/uploads/1/3/0/5/130543740/130543740.html#final+fantasy+tactics+download PDF link annotation
    • http://hostmaster.thearmy.co.uk/uploads/1/3/1/3/131384547/mubaveduto.pdfIn PDF document text
    • http://blockchainpros.info/uploads/1/3/0/4/130483393/zadikatimonopetixin.pdfIn PDF document text
    • http://sacramento-expungement.com/uploads/1/3/1/8/131856645/1364738.pdfIn PDF document text
    • http://shearwaterwarmbloods.ca/uploads/1/3/1/6/131606677/d7d36960.pdfIn PDF document text
    • http://ourladyoflourdesela.org/uploads/1/3/0/5/130539840/752207.pdfIn PDF document text
    • http://anchortechnologies.net/uploads/1/3/0/6/130621554/3897558.pdfIn PDF document text
    • http://marcus-roberts.com/uploads/1/3/0/5/130541803/towaxupin.pdfIn PDF document text
    • http://mta-sts.mail.ronaldgrayministries.org/uploads/1/3/0/8/130813132/1254681.pdfIn PDF document text
    • http://airarea.space/uploads/1/3/0/5/130590323/b2e4737074e.pdfIn PDF document text
    • http://powernetgainesville.com/uploads/1/3/0/5/130547038/regiz.pdfIn PDF document text
    • http://hourglassescaperoom.com/uploads/1/3/0/7/130738572/bowuxifufoliniv_bakarerox_zesiwe.pdfIn PDF document text
    • http://midiowaworkingdog.com/uploads/1/3/0/9/130969618/tumazubes-tasotetovudiw-vuposu.pdfIn PDF document text
    • http://f5.undesirable.us/uploads/1/3/0/5/130543740/terms.htmlIn PDF document text
    • http://f5.undesirable.us/uploads/1/3/0/5/130543740/dmca.htmlIn PDF document text
    • http://f5.undesirable.us/uploads/1/3/0/5/130543740/policy.htmlIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://garigubit.files.wordpress.com/2020/06/takida.pdfIn PDF document text
    • https://wutamewoj.files.wordpress.com/2020/06/28236857339.pdfIn PDF document text
    • https://laderafi767971175.files.wordpress.com/2020/06/rejofewuzutopurena.pdfIn PDF document text
    • https://fegikiduj.files.wordpress.com/2020/06/9576611325.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
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 3

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_off000063d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63D5 21916 bytes
SHA-256: 9375f920923b8439327166dc5b1b3196e8274bf0540a3143caa485ff0639f609

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