Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad68383e66f76d25…

MALICIOUS

PDF

39.0 KB Created: 2020-11-07 10:45:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 741ffd4e68952b3a1f1969c04f26f8f4 SHA-1: 924a2614db77318157b8a05f9edd52b4cee75001 SHA-256: ad68383e66f76d25ee6ae0f20444850158cafe142b2d388f7705f7774727a14f
66 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment 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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://traffnew.ru/123?keyword=outdoor+porch+swing+beds+diy PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4376609/normal_5f98168366704.pdfIn PDF document text
    • https://wusiparopebabo.weebly.com/uploads/1/3/4/5/134505529/3463222.pdfIn PDF document text
    • https://mawanegofarate.weebly.com/uploads/1/3/4/4/134466522/697eac2703cf01.pdfIn PDF document text
    • https://rukutatonaneto.weebly.com/uploads/1/3/4/0/134012616/nexoxakogozelid.pdfIn PDF document text
    • https://goduvozimaku.weebly.com/uploads/1/3/1/3/131380582/pukuka.pdfIn PDF document text
    • https://ribifafugulif.weebly.com/uploads/1/3/4/6/134650062/3475556.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/zibenoroduzuw/fupedibupuketawunobadava.pdfIn PDF document text
    • https://kebupud.files.wordpress.com/2020/11/16674380217.pdfIn PDF document text
    • https://s3.amazonaws.com/novipaliwid/super_compost_osrs_ge.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/anemias_oms.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65da7f83-47e2-4f96-97c6-de67d5f25495/ffa_official_dress_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/guvovigo/67201566417.pdfIn PDF document text
    • https://xasuxedizos.files.wordpress.com/2020/11/wureruteginonop.pdfIn PDF document text
    • https://todayshomeowner.com/wp-content/uploads/radio/files/2019/04/ricky-porch-evolution.mp3In 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_off00005961.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5961 5456 bytes
SHA-256: 6473889eb684fe891494dcff2a6a8f4337c6df6db1e2c6f4504272bc5c510d4d
font_01_sfnt_off00006bf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BF8 10448 bytes
SHA-256: 2c6e598b63826c154c5394e60d620c584ebecba07fa250e95829d0c4d5281ed1

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