Malicious PDF — malware analysis report

Static analysis result for SHA-256 3094ba5f89aa4097…

MALICIOUS

PDF

62.7 KB Created: 2020-08-28 12:59:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 4942ba0e8c0bfd49a3cb2c9f4b4213af SHA-1: e7296c59f9e1f8f1f298975c07d916868d010654 SHA-256: 3094ba5f89aa40974f127e014dd9d75022734ae5457f15aa01afd86c0e57f7ea
154 Risk Score

Malware Insights

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

The PDF contains numerous links, with a critical heuristic identifying it as a redirector and a link farm. The primary malicious URL, 'https://ttraff.me/pify?keyword=pandillas+guerra+y+paz+primera+tempo', is likely used to redirect users to malicious content. The ML classifier strongly indicated maliciousness, supporting the assessment of a malicious document designed to lead users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.me/pify?keyword=pandillas+guerra+y+paz+primera+tempo In PDF document text
    • http://xiwumut.fortytwomotorsports.com/uploads/1/3/1/0/131070493/jorev.pdfIn PDF document text
    • http://files.gloscamsoc.org/uploads/1/3/1/4/131453934/bofopobazek_kufalekokiva_fereralogevules_bagebudunumusen.pdfIn PDF document text
    • http://files.julieclarkbooks.org/uploads/1/3/1/3/131380591/268344.pdfIn PDF document text
    • http://files.healingvaginismus.com/uploads/1/3/0/8/130874422/d38ef9b17be3.pdfIn PDF document text
    • http://files.urbangreenkids.org/uploads/1/3/1/1/131164446/945066.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1381/5966/files/tozuxaxidesadema.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3924/3931/files/bibla_katolike_shqip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1518/4295/files/ruxalibegosorojolole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5396/3678/files/alice_in_wonderland_full.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9728/3992/files/android_fragment_dependency.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9163/8934/files/nepobozupalabojaru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2545/7575/files/migojudiganeneta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/6746/5890/files/xonokotidagajof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2535/6184/files/innovators_dilemma_summary.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_off0000b491.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB491 5432 bytes
SHA-256: 1e938bb6751405d3ac023fc454fa87320a988d8d67c946f295c83da9669374f8
font_01_sfnt_off0000c6ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6FF 11356 bytes
SHA-256: 2fea22543c55c3d2705b406ea6b3a4c16aa7b8b73b87d8511610e06c617bd67d

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