Malicious PDF — malware analysis report

Static analysis result for SHA-256 542d4f7dc66f4720…

MALICIOUS

PDF

72.8 KB Created: 2021-02-22 06:58:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 22b979090bc4ed4049594114eab59e13 SHA-1: a652440dc7ccb74b66de80885c3977ad758cb49a SHA-256: 542d4f7dc66f47202a4742bc640d912464e3fa438bd042072092e797dd686da9
86 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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 https://baarspo.ru/wix?keyword=eric+church+green+bay+ticketmaster PDF link annotation
    • http://fitokaps.xyz/pewukigcjvqw.pdfIn PDF document text
    • http://wizoditororoxo.iblogger.org/datumavuzimuravimum.pdfIn PDF document text
    • http://fogarapisow.22web.org/nifufajidukinozukizinas.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391893/normal_602d72537ca8d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445557/normal_602eb8ecd26a3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493916/normal_5ffac865515dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391331/normal_60170642d1bc7.pdfIn PDF document text
    • https://cdn.sqhk.co/bexutavukaro/ijgiSNr/lodamamegenuxuxov.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377697/normal_5ffc4c63bb67c.pdfIn PDF document text
    • https://cdn.sqhk.co/pepupiribojo/nAiggdx/zurip.pdfIn PDF document text
    • https://cdn.sqhk.co/wemorapi/5jihii3/womex.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dixaleko/blue_cross_illinois_claim_review_form.pdfIn PDF document text
    • http://kejinimijenemav.epizy.com/vezenewumisagafirofuride.pdfIn PDF document text
    • http://zitupelu.epizy.com/jixipa.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
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF48 5444 bytes
SHA-256: 9873b34604a12d097a149d1722fec0250af72f5f41b727adc2f4370d7ee38935
font_01_sfnt_off0000f1af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1AF 10572 bytes
SHA-256: 8c93df9e21d05499d179baba45653446670cce76f904e0d101001d3430fa10c6