Malicious PDF — malware analysis report

Static analysis result for SHA-256 2048518e54f63c0a…

MALICIOUS

PDF

48.7 KB Created: 2020-11-08 06:19:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: e864df3ede821372806acc5e8fa63256 SHA-1: 1282d6c42672a5521d358f2d36daaa622212dced SHA-256: 2048518e54f63c0a97551ab11acc978dbbedf2714d447bf47a6152b9b39c78d1
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded URLs and text that mimic a game guide, aiming to trick users into visiting a suspicious domain. The ML classifier strongly flagged this PDF as malicious, and the presence of multiple external links suggests a link farm or redirection scheme. No scripts were extracted, but the document body directly contains the malicious URL.

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://trafffe.ru/123?keyword=poptropica+guide+to+time+tangled+island PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4393503/normal_5f9f899642e95.pdfIn PDF document text
    • https://talowitutujuf.weebly.com/uploads/1/3/3/9/133999148/fudimeluwosuwe.pdfIn PDF document text
    • https://xabisemegebo.weebly.com/uploads/1/3/4/4/134491474/jeluw-rorug.pdfIn PDF document text
    • https://sibojigejediwij.weebly.com/uploads/1/3/4/6/134606131/47db3e8d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375197/normal_5f9d190d5ae39.pdfIn PDF document text
    • https://popekuzukije.weebly.com/uploads/1/3/4/4/134471955/7654532.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/wulagisi/natural_tendency_10_letters.pdfIn PDF document text
    • https://s3.amazonaws.com/datarofapakil/wiwababofutejutumesi.pdfIn PDF document text
    • https://danuxowifoka.files.wordpress.com/2020/11/pdf_to_word_converter_in_editable_format_free_online.pdfIn PDF document text
    • https://s3.amazonaws.com/bewibiwat/mojug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a20b4dfb-ccfd-42d0-b21f-33fc0947af40/nikukapiva.pdfIn PDF document text
    • https://s3.amazonaws.com/degisapemifa/desarrollo_biopsicosocial_del_ser_humano.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/devil_may_cry_apk_game_download.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_off00007ee8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EE8 5392 bytes
SHA-256: 8d186d0bd6397f9c285e9860c08583d2fd9ed89260df5e7c3e0ea907293648fa
font_01_sfnt_off00009129.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9129 10848 bytes
SHA-256: 42fc3eb8d711be60fabc1068adaaa3f3c89ec9535dc3892e0fd203f9498934f4

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