Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e89e6989ea7a889…

MALICIOUS

PDF

31.8 KB Created: 2020-03-29 06:01:51 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 93995e732c0b3105b58eb2ffacf50ae4 SHA-1: 160045434f837405abd6873c902b84c0140addf3 SHA-256: 1e89e6989ea7a8890f96c32436a5196e21c281755b94ae9f6108f5f92527b8ab
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains a large number of embedded external links, a technique often used for SEO spam or to redirect users to malicious sites. The ML classifier strongly indicated maliciousness. While no scripts were extracted, the PDF structure and numerous URLs suggest a delivery mechanism for further compromise.

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://nashobavalleyextractco.com/uploads/1/3/0/5/130547969/130547969.html#the+giver+chapter+16+audio PDF link annotation
    • http://brexitpartychichester.co.uk/uploads/1/3/0/7/130740524/pazikajimipemi-mejuxozef-bemisutanoleja-momesigenir.pdfIn PDF document text
    • http://melodycares.com/uploads/1/3/0/6/130604824/mobeworifu_xanolidukesureb_gasobumedok_tufapupuwuv.pdfIn PDF document text
    • http://carmelorganizer.com/uploads/1/3/0/6/130620364/tefajazomuze_wikotij_verifomepi_zazusur.pdfIn PDF document text
    • http://mouplus.com/uploads/1/3/0/6/130621046/vefapawibul.pdfIn PDF document text
    • http://dalelashsholisticsangha.com/uploads/1/3/0/9/130969313/wonulojaxunita-tipoputixufuju-kigutetut.pdfIn PDF document text
    • http://firstmelissa.org/uploads/1/3/0/5/130545189/pajuru.pdfIn PDF document text
    • http://vigilaunties.org/uploads/1/3/0/5/130551896/zufenu.pdfIn PDF document text
    • http://customonetenders.net/uploads/1/3/0/4/130483266/3918682.pdfIn PDF document text
    • http://shitsfunny.com/uploads/1/3/0/6/130639223/16de12d3674.pdfIn PDF document text
    • http://www.pnfccwi.com/uploads/1/3/0/2/130291463/rebilotevatowusinaf.pdfIn PDF document text
    • http://www.suerayreads.com/uploads/1/3/1/0/131070866/manonubitutek-gisenil-rogun.pdfIn PDF document text
    • http://jollyjackssc.com/uploads/1/3/0/5/130543305/wezibixosaru.pdfIn PDF document text
    • http://easygardensolutions.com/uploads/1/3/0/6/130604269/4acc7a170.pdfIn PDF document text
    • http://celticpride.com/uploads/1/3/0/4/130488470/pojege_nodojafut_vitelu.pdfIn PDF document text
    • http://bysociety.com/uploads/1/3/0/4/130489262/vegafakisogusokede.pdfIn PDF document text
    • http://venturarvrentals.com/uploads/1/3/1/0/131070424/4402833a01.pdfIn PDF document text
    • http://bardinterns.com/uploads/1/3/0/2/130291908/tometa-tapumemazujateb.pdfIn PDF document text
    • http://gabrielaschaar.com/uploads/1/3/0/2/130274267/545ea170128.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

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_off000057c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57C2 6548 bytes
SHA-256: 1d306c4523c231b6f2037647a4beb9408673e0b5f511882570e45f6218717f5d

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