Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ba6afa74506cdcf…

MALICIOUS

PDF

45.1 KB Created: 2020-03-27 03:52:07 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-08-25
MD5: 44c950e8e19ee92c497638609248a3e6 SHA-1: 0e1968ab8f43b742dc1c0986b772140adbc52a74 SHA-256: 8ba6afa74506cdcf49a490d1f54c90b44d98b6f84f660d251b63157c596b1730
96 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or SEO manipulation tactic. The document body contains garbled text and references to 'wkhtmltopdf', indicating it was likely generated programmatically. The primary intent appears to be directing users to a large number of external URLs, potentially for malicious purposes such as hosting further exploits or phishing 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://a1lift.org/uploads/1/3/1/1/131164127/131164127.html#the+simple+past+of+be+was+were+ejemplos PDF link annotation
    • http://mafemarquez.com/uploads/1/3/0/6/130604386/faxuse.pdfIn PDF document text
    • http://shipbidder.com/uploads/1/3/0/6/130604419/penagoganijab.pdfIn PDF document text
    • http://seattle-wireless-phone-repair.com/uploads/1/3/0/6/130604255/4ac438742.pdfIn PDF document text
    • http://cpanel.hbhospice.com/uploads/1/3/0/2/130289663/suwesoxeselo.pdfIn PDF document text
    • http://heavenlypoodlesanddodles.com/uploads/1/3/0/7/130775537/25325088d4f6f86.pdfIn PDF document text
    • http://adelantepalma.org/uploads/1/3/0/5/130540246/mamikejokepixi_suxolibobadewo_pezetan.pdfIn PDF document text
    • http://www.indianflavour.co/uploads/1/3/0/8/130814225/webetiwuzi.pdfIn PDF document text
    • http://supeshoppers.com/uploads/1/3/0/4/130476255/mibamiru.pdfIn PDF document text
    • http://youthfuldragon.com.au/uploads/1/3/0/2/130287738/kigisojuvun.pdfIn PDF document text
    • http://dummydiets.com/uploads/1/3/0/5/130550792/8212473.pdfIn PDF document text
    • http://autodiscover.childrensartstudio.biz/uploads/1/3/0/4/130489627/giduxukiva.pdfIn PDF document text
    • http://kindredspiritsofboca.com/uploads/1/3/0/4/130436093/5872755.pdfIn PDF document text
    • http://bronmarycane.com/uploads/1/3/0/2/130289711/relamovexabugi-digemab-zefivutosuwib-pofod.pdfIn PDF document text
    • http://sidewalkstour.com/uploads/1/3/0/6/130621464/zifulipotimid-nederuxolerin-kidirudovozodul.pdfIn PDF document text
    • http://chainsocietydiscs.com/uploads/1/3/0/2/130288710/600994.pdfIn PDF document text
    • http://blhpropertiesllc.com/uploads/1/3/0/8/130874433/03722202faf9.pdfIn PDF document text
    • http://mysticwatersoaps.com/uploads/1/3/0/6/130620348/kofimilitaz_jijapis_gufefijotupanex_sekukub.pdfIn PDF document text
    • http://asia-asga.org/uploads/1/3/0/6/130620700/531881.pdfIn PDF document text
    • http://www.aultmantransitional.com/uploads/1/3/0/6/130604613/memejupopusoje.pdfIn PDF document text
    • http://stonestyler.com/uploads/1/3/0/4/130483794/zizevuda.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_off00007a82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A82 9360 bytes
SHA-256: b1d4aa1b3e8c57c148f0ecc4c2ba1d32e89706d6bab5f58407b6fe16cce6c98c
font_01_sfnt_off00009ce4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CE4 2652 bytes
SHA-256: e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea

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