Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5b2bb60e0d8de87…

MALICIOUS

PDF

40.1 KB Created: 2020-03-21 17:04:50 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-04
MD5: 89e15a062bc2000f20cc370dd9d6ec7e SHA-1: 8bef9561faa73a89a52892786b844d39083df935 SHA-256: b5b2bb60e0d8de87ecf27a9af4330c20bef90e66ddbfc1036920e2f154e035fc
96 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or SEO spam campaign. The document body is heavily obfuscated and appears to be generated content, further supporting the idea that the primary purpose is to drive traffic to these external sites. No scripts were extracted from this sample.

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://un-guilty.com/uploads/1/3/0/6/130639924/130639924.html#%281+kg+%3D+1000+g+1+m3+%3D+106+cm3%29 PDF link annotation
    • http://votebyronmartin.com/uploads/1/3/0/6/130604014/2031230.pdfIn PDF document text
    • http://www.scarsoftheunfoughtbattle.co.uk/uploads/1/3/0/6/130639201/navexedara.pdfIn PDF document text
    • http://jackupwithjack.com/uploads/1/3/0/9/130969587/6c6cb1.pdfIn PDF document text
    • http://americanfamilygolf.us/uploads/1/3/0/3/130323928/xowepijumijiri-kilomina.pdfIn PDF document text
    • http://barbaraannkipferart.com/uploads/1/3/0/3/130312965/repadimeliluxugonep.pdfIn PDF document text
    • http://medicalmalpracticegeorgia.com/uploads/1/3/0/4/130477074/008cf1015d2.pdfIn PDF document text
    • http://kristawassenaar.com/uploads/1/3/0/5/130590368/22e556a82e278a.pdfIn PDF document text
    • http://milwaukeepestpros.com/uploads/1/3/0/2/130289347/luwedabisugagejax.pdfIn PDF document text
    • http://njfamilyphotography.com/uploads/1/3/0/4/130483860/nazupavimir-degiduligojoxi-kewejewiniko.pdfIn PDF document text
    • http://maturefaps.com/uploads/1/3/0/7/130775803/fufijuza_tesifavagopal.pdfIn PDF document text
    • http://orientimtoys.com/uploads/1/3/0/5/130551294/talaxulukuteliredu.pdfIn PDF document text
    • http://newmoses.com/uploads/1/3/0/2/130289610/8164586.pdfIn PDF document text
    • http://albumin88.goteamonline.com/uploads/1/3/0/7/130775570/f67e64.pdfIn PDF document text
    • http://mailserver.margarethigginson.com/uploads/1/3/0/5/130539981/dda0f4d.pdfIn PDF document text
    • http://cdzw-heads.net/uploads/1/3/0/8/130874413/bifeposegiz.pdfIn PDF document text
    • http://www.rocksiestardust.com/uploads/1/3/1/0/131070505/fikitujejugijetano.pdfIn PDF document text
    • http://www.humanitybracelets.org/uploads/1/3/0/2/130272340/latotusisun_tilup_vibikakejavibu.pdfIn PDF document text
    • http://mx.edgeinsuranceservices.com/uploads/1/3/0/8/130813780/234867.pdfIn PDF document text
    • http://www.mr-organics.eu/uploads/1/3/0/5/130588185/dodolesumavara-pezuzujuti.pdfIn PDF document text
    • http://renovators.clientdemo.co.nz/uploads/1/3/0/7/130776449/finevanuzujiri.pdfIn PDF document text
    • http://www.joeytrail.com/uploads/1/3/0/2/130288421/2792181.pdfIn PDF document text
    • http://schoolnotesmagazine.org/uploads/1/3/0/4/130491079/vaxazi-pibugure-bafisolefuruwex-dolufu.pdfIn PDF document text
    • http://www.guru-jpkr.co/uploads/1/3/0/7/130775518/5623197.pdfIn PDF document text
    • http://74-123-76-55.mgwnet.com/uploads/1/3/0/7/130776162/bamapadiron.pdfIn PDF document text
    • http://www.elpicositocatering.com/uploads/1/3/0/8/130813849/3203115.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn 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_off00006a9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A9B 7672 bytes
SHA-256: d9b0c1f30d67731388fdec1721748ef5edc3b29ac5a1c3a93ae13ecb99f6d149
font_01_sfnt_off000088c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88C9 2704 bytes
SHA-256: cf2338b7895a3a873add1db7dfb411390262a2a3d24e5b3dccff59843624ea97

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