Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1a2686ad50cf5ad…

MALICIOUS

PDF

52.9 KB Created: 2020-11-05 20:42:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5cbf008e6101a9bb43a8022579c20821 SHA-1: 7738afce1790aebd1d710483beb2273cdf17f1fd SHA-256: b1a2686ad50cf5ad4452ebe0fd436d9fffcd629a0833240f3eb826cdab62855a
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF document was flagged by a machine learning classifier as malicious and contains a critical heuristic for brand-impersonation credential phishing. It directs users to a redirector URL that ultimately leads to a link farm hosted on disposable domains, impersonating 'Target' and using a search query as a lure. The presence of multiple unknown URLs hosted on Weebly suggests a campaign distributing phishing lures.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://sebiwijojemobod.weebly.com/uploads/1/3/4/0/134097571/rifik.pdf.
  • 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/strik?keyword=henry+hudson+s+ship PDF link annotation
    • https://sebiwijojemobod.weebly.com/uploads/1/3/4/0/134097571/rifik.pdfIn PDF document text
    • https://fanawilixu.weebly.com/uploads/1/3/1/4/131408209/labuxatevoriza_pozufobaxopez_dudenuni_wuruj.pdfIn PDF document text
    • https://mabanopovofed.weebly.com/uploads/1/3/1/4/131453130/xusarawekefimira.pdfIn PDF document text
    • https://fixabugodorev.weebly.com/uploads/1/3/1/8/131856934/mitajepe.pdfIn PDF document text
    • https://ramowukegi.weebly.com/uploads/1/3/4/5/134508735/dobuvul-tepimudika-nujisegud.pdfIn PDF document text
    • https://duxevuwelinabim.weebly.com/uploads/1/3/4/3/134353564/pezopox.pdfIn PDF document text
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/6981840.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/1/0496/2825/0276/files/faceing_math_answer_keys.pdfIn PDF document text
    • https://s3.amazonaws.com/mexesazaxasa/zuvujigepojuduga.pdfIn PDF document text
    • https://s3.amazonaws.com/kubafezin/zotaguwapu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db4bf4f9-0dae-4b74-9161-f90356d40ab6/58389645912.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/2263/7992/files/murder_on_the_dance_floor_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a0864c8-57d3-4dfc-856b-b0ca23c3967c/47064622133.pdfIn PDF document text
    • https://s3.amazonaws.com/tugumeb/rozeguxexalanafoza.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_off000090e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90E6 4868 bytes
SHA-256: 2b1ac670d3da641d35be61a96a422e10445771327b2bdab350ed17bc7b9739e1
font_01_sfnt_off0000a177.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA177 10956 bytes
SHA-256: ba9e6a0585086b29309391b9da03f93f3232ab4f483f667da29c5e7c1bfce863

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