Malicious PDF — malware analysis report

Static analysis result for SHA-256 4aff8a4399eb9203…

MALICIOUS

PDF

35.1 KB Created: 2020-10-26 00:31:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-06
MD5: 69d5369bd4f9a6445230f252bfda625a SHA-1: 807df48764857c17d380ae376f62e083d82eda11 SHA-256: 4aff8a4399eb9203ed7b55293f1567feb2b4fdb3993394cd0728482275c671dd
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.
  • 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://gettraff.ru/wb?keyword=startech%204%20port%20dvi%20usb%20kvm%20switch%20manual In PDF document text
    • https://lozulijulejibog.weebly.com/uploads/1/3/1/8/131857057/7231438.pdfIn PDF document text
    • https://tiferivirukituk.weebly.com/uploads/1/3/4/4/134433041/patimitusi-zuxaj-banosupu-gefekel.pdfIn PDF document text
    • https://tivexafo.weebly.com/uploads/1/3/4/3/134348633/baresedivotipu_gupajopijalimi_nezebakowij_rajalixo.pdfIn PDF document text
    • https://masogipu.weebly.com/uploads/1/3/1/6/131606875/pinipavofi-sapetituro.pdfIn PDF document text
    • https://kafasomawupi.weebly.com/uploads/1/3/0/7/130775431/fagazovama_nebajikoro_likipasobapup.pdfIn PDF document text
    • https://nulumekut.weebly.com/uploads/1/3/4/3/134373747/6157223.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/5e704d23-2520-44f4-b088-d750dd3e383b/46079444038.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0781004-567e-4b88-a062-239118f09dad/litovefelifejixa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba0161cf-c41b-491a-8ca9-e4f2c29796c9/goxufalepaxej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03fc1cea-55b3-48c9-840a-3787ce5c88cf/89730282480.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3baa5e39-d3d3-4bcf-94d6-edd4be8417be/97385745234.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95079311-2bbf-4898-8598-e35d38b2a65d/sikegiwajudimaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b70cb1b-83d1-4445-80a8-9f198b256ada/jupinal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82d3d7b0-d482-4b09-add4-14f902a859e0/1605566032.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4feca978-0f94-4a63-8ed5-8f53f4e67e32/93442790743.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5417/7185/files/plyometric_box_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5232/5272/files/mapalojesuwovokuzoroviruz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7125/0333/files/omron_wrist_bp_monitor_instructions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/6200/8214/files/torrance_time_warner_cable_tv_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/6531/9839/files/polymer_synthesis_theory_and_practice.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0101/1611/files/lagotto_romagnolo_breeders_new_england.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_off00004d55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D55 5860 bytes
SHA-256: 9ca1d05763cbb38094bda5ef6af89b320f0d89b736b3b9309ac2eadec5d9c4fc
font_01_sfnt_off00006126.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6126 8776 bytes
SHA-256: 757860eb46bf50e516ef3ee964178b07e58ef9ea305ca42dc738dd8b0cb4ff4d

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