Malicious PDF — malware analysis report

Static analysis result for SHA-256 090348e896196182…

MALICIOUS

PDF

43.0 KB Created: 2020-11-05 17:03:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 54198504cc7e1b78b6b38c4388ad8b64 SHA-1: d8a6a630ccfa981e4764f0d8956c2f2bae63ea79 SHA-256: 090348e896196182dcfb2738c2c69f0551836f81af44188e2db67dd0e5377907
74 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffine.ru/123?keyword=world+4+you+free+download PDF link annotation
    • https://gatofofuxiwiv.weebly.com/uploads/1/3/4/2/134265530/papolefuji_joweriveloxegub_barelimaniju_tubawarosazajel.pdfIn PDF document text
    • https://zuvubexusemeto.weebly.com/uploads/1/3/4/3/134373725/borulageduzirez-zavizex.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/3257372.pdfIn PDF document text
    • https://xewurilarigifu.weebly.com/uploads/1/3/4/2/134236076/c37173ecaec.pdfIn PDF document text
    • https://melegejisud.weebly.com/uploads/1/3/1/3/131379421/sokuwuw.pdfIn PDF document text
    • https://rogapunuki.weebly.com/uploads/1/3/4/3/134375427/poror.pdfIn PDF document text
    • https://radutarogo.weebly.com/uploads/1/3/4/3/134379411/eca9703e1669c56.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366043/normal_5f880815d26b5.pdfIn PDF document text
    • https://sazojowob.weebly.com/uploads/1/3/4/3/134351878/vowibakadipos.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/84e1d565-a651-401a-becb-9e7b4b04989c/evaluacion_matematicas_2_primaria_sa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe846012-46f4-4656-92c8-ef016c8a4ca2/12341767799.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/996c565e-ca16-43d8-8801-9f405b74c4f7/vewasirisazifimebexufov.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000689a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x689A 5020 bytes
SHA-256: 3107de515bf2ff3ed43f36245d1ba4c97417615fd5c76eef85b22fe5a105ba32
font_01_sfnt_off000079df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79DF 11092 bytes
SHA-256: 9247620efd84ec54465070dc832f5efb171ac1fc03af20cd77db615b8ee7c50d

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