Malicious PDF — malware analysis report

Static analysis result for SHA-256 8dd072b6cc362c26…

MALICIOUS

PDF

72.7 KB Created: 2021-04-02 17:40:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: bbd3ce183fcfe3e23cf0e6e0daaeb1cf SHA-1: aa108f52ac102d0deff8b8bbc5d2d83799110825 SHA-256: 8dd072b6cc362c2658a41d92b335d739a09e011947dc6a10cf78b4f250e20db8
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with several pointing to disposable domains and link farms, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were directly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://seumenha.ru/wix?keyword=union+yellow+jackets+softball PDF link annotation
    • http://nupesupo.mypressonline.com/nivekijeso.pdfIn PDF document text
    • http://pelinebaj.mypressonline.com/51837377931.pdfIn PDF document text
    • http://kigalasabipigo.medianewsonline.com/fevavorejofod.pdfIn PDF document text
    • http://ropisunofo.mygamesonline.org/32213701824.pdfIn PDF document text
    • http://dotenipago.medianewsonline.com/what_do_the_different_colors_on_the_map_represent.pdfIn PDF document text
    • http://larumutul.getenjoyment.net/cognitive_behavioral_therapy_exercises.pdfIn PDF document text
    • http://cooldomen.space/diffusion_and_osmosis_worksheet_answers_ap_biologygk31f.pdfIn PDF document text
    • http://axecheat8.xyz/how_to_read_bryant_model_and_serial_numbers9tzba.pdfIn PDF document text
    • http://sadogiropi.mypressonline.com/what_is_the_synopsis_of_romeo_and_juliet.pdfIn PDF document text
    • http://ravigimojamel.mypressonline.com/fumuneleledenakuxif.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://ca108e69-7b6b-43f0-8f16-d96ebeb8a33d.filesusr.com/ugd/79e0dc_ae738746ee7e40ab845a46f0eae08b6f.pdf?index=trueIn PDF document text
    • https://c183b790-cb34-49aa-848e-1a9f2b14dda3.filesusr.com/ugd/d8966e_7986cfac00ce482697a79ce94b9d9e47.pdf?index=trueIn PDF document text
    • https://1c985592-4fe2-425a-b8d2-7dc24782370c.filesusr.com/ugd/a13bc2_acf5aca373e744b7838a2bf254d823a8.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/021dd097-02a4-4d47-8d7b-ba6dd6c9c0b3/nezukinexekifapirenefife.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25d10cc9-c3d4-4d6b-bac8-6171dd555115/what_is_the_blue_book_value_of_a_2011_ford_escape.pdfIn PDF document text
    • http://vavadot.onlinewebshop.net/top_ten_operating_systems_for_pc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7820bcc4-400b-4820-bcaa-c5bd7c619bf6/wofixofakoluxofekarasate.pdfIn PDF document text
    • http://tokozod.myartsonline.com/ketununusufajaja.pdfIn PDF document text
    • https://09235f31-469a-4613-94fc-36d04c1f642a.filesusr.com/ugd/8b6407_f6c176133dfe4325a62c602954eea529.pdf?index=trueIn PDF document text
    • http://biburusig.myartsonline.com/nosifumevabizufepidenilus.pdfIn PDF document text
    • http://vajapojaperusu.myartsonline.com/92617089951.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/205382cc-de1e-4b89-aa44-563a54f25393/puwiririjozubijopipo.pdfIn PDF document text
    • http://pimobepetokonud.myartsonline.com/monat_rejuvenique_oil_intensive_uses.pdfIn PDF document text
    • https://add83a7c-0e31-48b3-928b-061d82ba9144.filesusr.com/ugd/205ae4_9aade4a3d67f40fc868149f4a9d994fe.pdf?index=trueIn PDF document text
    • http://kewevagisugimuw.onlinewebshop.net/can_you_cut_stainless_steel_with_a_plasma_cutter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c4cd85f-63b9-46dc-af78-f1d099199f10/92999007140.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d2e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2E6 5032 bytes
SHA-256: e201b6d3b99b2b746db69326fcfd288ac18505dc1e306a37d0cc58dbd31c976f
font_01_sfnt_off0000e436.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE436 10120 bytes
SHA-256: aa7b5134aa0cc580c63021d0233e893286ae2fcaad6338f149194768d033cbf2
font_02_sfnt_off000106f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106F8 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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