Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc6d0d8ee5f4b69d…

MALICIOUS

PDF

40.8 KB Created: 2020-04-03 09:30:29 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: b15a89192fb253365de1dfc4f2ff2761 SHA-1: 35b6afcfee33eb1c1ad6565647c2f682fa8297f4 SHA-256: dc6d0d8ee5f4b69db6d153026b51a14dffd3c1a72331b3c272d2ae18406afda0
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains a large number of external links, a technique often used for SEO manipulation or to redirect users to malicious content. The ML classifier strongly indicated maliciousness. The document body contains fragmented text related to 'voyager electronic brake control' and the wkhtmltopdf generator, but no clear user-facing lure was extracted. The primary attack pattern involves directing users to a vast network of seemingly unrelated domains, each hosting a PDF file.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: http://blondeambitonband.com/uploads/1/3/1/3/131398215/131398215.html#9030+voyager+electronic+brake+control.
  • 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://blondeambitonband.com/uploads/1/3/1/3/131398215/131398215.html#9030+voyager+electronic+brake+control PDF link annotation
    • http://lindseyshomedaycare.com/uploads/1/3/0/2/130288594/7207230.pdfIn PDF document text
    • http://mrnakfayfarscholarshipfund.com/uploads/1/3/0/7/130776351/pejotaburamujuna.pdfIn PDF document text
    • http://samioahpahus.com/uploads/1/3/0/6/130605396/buxopisofaluxofudezi.pdfIn PDF document text
    • http://gislweb.info/uploads/1/3/0/6/130620783/5d20b2.pdfIn PDF document text
    • http://heathershuker.com/uploads/1/3/0/5/130543991/eb29ece2b68d6.pdfIn PDF document text
    • http://independenteyesrc.com/uploads/1/3/0/5/130544652/zixifowonosage.pdfIn PDF document text
    • http://augustohfest.com/uploads/1/3/1/4/131438427/gubigoteromujarep.pdfIn PDF document text
    • http://alustrielseportfolio.org/uploads/1/3/0/7/130776277/veren.pdfIn PDF document text
    • http://escapehavens.com/uploads/1/3/0/6/130605448/4049877.pdfIn PDF document text
    • http://mknutritionsystems.com/uploads/1/3/0/6/130621857/pitudibeva.pdfIn PDF document text
    • http://simtravel.org/uploads/1/3/0/6/130639116/xubora-sasofojitobawu-poviwa.pdfIn PDF document text
    • http://paulccleaningservices.com/uploads/1/3/0/6/130604759/2adba593b.pdfIn PDF document text
    • http://whitestarcannabisfarm.com/uploads/1/3/0/8/130874115/lerajanidig.pdfIn PDF document text
    • http://beyondtheballer.com/uploads/1/3/0/4/130476492/kipumexav_bodevixifugizis.pdfIn PDF document text
    • http://lsacleaningservices.com/uploads/1/3/0/7/130739824/368d145245.pdfIn PDF document text
    • http://outsideisin.net/uploads/1/3/0/7/130775088/9d404335.pdfIn PDF document text
    • http://ahmawanphotos.com/uploads/1/3/0/7/130776760/wukena.pdfIn PDF document text
    • http://missholleyskitchen.com/uploads/1/3/0/2/130289732/3271477.pdfIn PDF document text
    • http://reneemariesmithesq.com/uploads/1/3/0/5/130588352/giguveketajo.pdfIn PDF document text
    • http://limaesthetic.com/uploads/1/3/0/7/130776257/rudijeva.pdfIn PDF document text
    • http://saxtonsriverdistillery.com/uploads/1/3/0/6/130604689/bipofefikatuw-lomav.pdfIn PDF document text
    • http://ktsky1.com/uploads/1/3/0/5/130588841/letexuvinaxurovuma.pdfIn PDF document text
    • http://tokyo2020paralympics.com/uploads/1/3/0/3/130323253/vufuzubi-wudazagud-kefibi-rosape.pdfIn PDF document text
    • http://healthcannabis.com/uploads/1/3/0/5/130539247/zamen.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 1

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_off00007504.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7504 8512 bytes
SHA-256: f449c467c4bbe345e9f4316e64facb1e522b7dd356b6e2d7752d8b57aeab53e5

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