Malicious PDF — malware analysis report

Static analysis result for SHA-256 f50c2d52ea06e9fb…

MALICIOUS

PDF

39.7 KB Created: 2020-11-08 02:08:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 93926b66438b7fccd04cbd336145a138 SHA-1: 26ccca856a073f7709c6c0cb12de6001d635797c SHA-256: f50c2d52ea06e9fbf92650c9d53b7ff18a43ce783ebb9751039d70719e49eedd
126 Risk Score

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.
  • 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.
  • 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://trafficel.ru/123?keyword=moana+free+online+youtube PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4452382/normal_5f9fc7b1ad1eb.pdfIn PDF document text
    • https://zolefixu.weebly.com/uploads/1/3/4/4/134432518/5c1ac58bdfa371.pdfIn PDF document text
    • https://nagifinapu.weebly.com/uploads/1/3/2/6/132696111/3096599.pdfIn PDF document text
    • https://redunexodozik.weebly.com/uploads/1/3/0/8/130814050/2858322.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412174/normal_5f9660fbda3c0.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/rijaliwiguvex/ffxiv_crafting_rotation_aesthete.pdfIn PDF document text
    • https://negixumojaku.files.wordpress.com/2020/11/tabla_de_razones_trigonometricas_de_angulos_notables.pdfIn PDF document text
    • https://vipuvixo.files.wordpress.com/2020/11/19025823963.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/560a84f1-5183-404b-a465-d8cd1325bee1/lixejezododajalebixowu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/937543aa-2401-4da3-a92f-353f0520b8c6/34166685920.pdfIn PDF document text
    • https://gonugatak.files.wordpress.com/2020/11/puwoxerolefopodudorelot.pdfIn PDF document text
    • https://vadazigifexe.files.wordpress.com/2020/11/merozasopegujibe.pdfIn PDF document text
    • https://s3.amazonaws.com/jakujakula/50240615319.pdfIn PDF document text
    • https://lodazogazitu.files.wordpress.com/2020/11/18582996233.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_off00005d82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D82 4832 bytes
SHA-256: db1dbcad317e9744e0f9fe7b9e64d2a061c20968f90b331400b3fa9b397d28cb
font_01_sfnt_off00006e1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E1A 10804 bytes
SHA-256: e59ed83b5222ce5fbe90ab27b3c9dc7764ec3b9ce1dd337e6e16913e0a28de77

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