Malicious PDF — malware analysis report

Static analysis result for SHA-256 24ae265482d73b60…

MALICIOUS

PDF

82.4 KB Created: 2021-05-29 06:22:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 1b08bfad0e556329b13db6c751629be2 SHA-1: d90f40cf6bd1c9ada8aaa0907f73807d53c528fe SHA-256: 24ae265482d73b600b9981ed99819b538320c04c4c3cb9b0af8efc896c59b8fe
186 Risk Score

Malware Insights

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

This PDF file is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, embedding numerous external URLs, with a primary URL pointing to a site that appears to be related to 'tv broadcasting script tagalog format'. The PDF's structure and the presence of a large number of external links suggest it is designed to redirect users to potentially harmful content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://ponafet.ru/123?utm_term=tv+broadcasting+script+tagalog+format PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4446784/normal_6012ceed5c71e.pdfIn PDF document text
    • https://numesenara.weebly.com/uploads/1/3/1/0/131069843/44a0b.pdfIn PDF document text
    • https://kinofipu.weebly.com/uploads/1/3/4/7/134725163/gewibipegeda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411915/normal_6033f27bb4759.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422161/normal_6057abe5eeed3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450733/normal_600dee0e5754e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502175/normal_5fffd3b57e998.pdfIn PDF document text
    • https://vefaruturibil.weebly.com/uploads/1/3/4/5/134525254/kozuzazetasepigebiz.pdfIn PDF document text
    • https://jaroxifapo.weebly.com/uploads/1/3/1/6/131636664/6f5617271df05.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451229/normal_60658e14c5ad5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374024/normal_60399e77a018e.pdfIn PDF document text
    • https://wufezaju.weebly.com/uploads/1/3/0/7/130738917/vusolipoxoju_gejegiwom.pdfIn PDF document text
    • https://weziriditovi.weebly.com/uploads/1/3/4/1/134108838/5522322.pdfIn PDF document text
    • https://lujuvikib.weebly.com/uploads/1/3/1/4/131406806/3cff312471466.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459028/normal_6004b38f6fc14.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496605/normal_602fff7c88857.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454668/normal_5fff022bc9400.pdfIn PDF document text
    • https://banavodix.weebly.com/uploads/1/3/4/6/134687022/5266355.pdfIn PDF document text
    • https://telewapoki.weebly.com/uploads/1/3/4/8/134897398/9024146.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416935/normal_60480a8dd6819.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/2ff166e6-009a-4522-84f9-47b5ff8980dd/voxovupagav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab99baae-7229-43f8-bdc7-65350fd6ffb7/what_is_john_conways_game_of_life.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eeb42b35-85bd-4507-b1a5-946616c3313f/lathi_signal_processing_and_linear_systems_solutions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/277288f0-c156-48a4-8272-f8ed422c832f/how_long_to_oven_bake_hamburger_patties.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb25ca75-c7ee-4f27-af43-757bf1070882/losufosemaniwik.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_off00010549.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10549 5624 bytes
SHA-256: 4438882f9126e910efb3722fcee5d32034faea60e6b64e105334ae6886374505
font_01_sfnt_off00011855.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11855 10424 bytes
SHA-256: 5c2071a59c40ee3b5dd49346d0a66200772bdd204587b2f6fd60533e3d681d04

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