Malicious PDF — malware analysis report

Static analysis result for SHA-256 86be71d952cca10c…

MALICIOUS

PDF

41.6 KB Created: 2020-03-30 05:48:54 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-07
MD5: e8c97631aaf516c1d21d467684a923a9 SHA-1: 259124efa2147e63d84d31fdbe955578635412f3 SHA-256: 86be71d952cca10c962c104b30f9bedcb5f9421131d0da06cf5ef1946b57dfdb
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links to external websites, many of which are dynamically generated and appear to be part of a link farm designed to attract traffic. The ML classifier strongly indicated maliciousness, and the PDF structure suggests it's intended to drive users to potentially malicious content hosted on these domains. No scripts were extracted, but the sheer volume of external links points to a traffic-driving or phishing-related scheme.

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://lamee-dark-version3-de.devsite-1.com/uploads/1/3/0/6/130605041/130605041.html#plc+ladder+logic+programming PDF link annotation
    • http://monumentalhomeentertainment.com/uploads/1/3/0/4/130476215/nazexowe_meripunoxagi_sizifeneba.pdfIn PDF document text
    • http://parklanebaptistchurch.info/uploads/1/3/0/5/130545666/dibigeluvomitixise.pdfIn PDF document text
    • http://wildflowerwritings.net/uploads/1/3/0/2/130289233/nezev_wopifedumomine_gijuwuvoposep_migusevijof.pdfIn PDF document text
    • http://cl-designs.ca/uploads/1/3/0/4/130435743/jikejowonezi.pdfIn PDF document text
    • http://ivoryoung.com/uploads/1/3/0/3/130379674/b28ec638c04e.pdfIn PDF document text
    • http://pikespeakseniors.org/uploads/1/3/0/5/130551935/sujose-kimoduri-zaluzimaxofasu-kekip.pdfIn PDF document text
    • http://mail.showmedental.com/uploads/1/3/0/4/130478160/mapamejoja.pdfIn PDF document text
    • http://hawaiibreastfeedinghelp.com/uploads/1/3/0/5/130551543/3cd780f055d.pdfIn PDF document text
    • http://therring.com/uploads/1/3/0/5/130539348/wawojijen.pdfIn PDF document text
    • http://petfolder.net/uploads/1/3/0/2/130288939/nenikevi-reneruxolilafes-jevumatidexival.pdfIn PDF document text
    • http://suor.pt/uploads/1/3/0/7/130740140/nusujofigukewele.pdfIn PDF document text
    • http://letsdanceteamnyc.com/uploads/1/3/0/5/130538842/zinilavewisojegen.pdfIn PDF document text
    • http://lady-jay.com/uploads/1/3/1/0/131070727/2551947.pdfIn PDF document text
    • http://weshootbridesworldwide.com/uploads/1/3/0/4/130488415/9448610.pdfIn PDF document text
    • http://goprotrans.com/uploads/1/3/0/2/130291766/b83f6cc07773c.pdfIn PDF document text
    • http://liquidbluesrq.com/uploads/1/3/0/4/130483871/2512770.pdfIn PDF document text
    • http://consertlar.net/uploads/1/3/0/6/130605240/folonezafasut_meroxap_lesuwaw_godefuxefe.pdfIn PDF document text
    • http://edermtest.com/uploads/1/3/0/7/130739164/gajatofinodul.pdfIn PDF document text
    • http://havenhealing.com/uploads/1/3/0/3/130324191/4286033.pdfIn PDF document text
    • http://addinginsight.com/uploads/1/3/0/6/130605381/vigivire.pdfIn PDF document text
    • http://mountainshadowfarm.ca/uploads/1/3/1/1/131164393/23b9c824.pdfIn PDF document text
    • http://onpointmn.com/uploads/1/3/0/5/130538839/kebebumawedajo.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
🗂 Part of campaign: chimimundo.net 3 samples

Related samples 7

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_off00007ac2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AC2 7752 bytes
SHA-256: 1b91baf7a3b42667de7783ed86e4a6ac8e1910c896e076e4e8ae1f96d91997a0

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