Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe0e81184e5f59bb…

MALICIOUS

PDF

67.0 KB Created: 2021-03-10 10:57:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: ab7e12f96230dc9cf95df56b7b4d1d55 SHA-1: 079a7be0d264a6d98a10a102125975c7f76e7179 SHA-256: fe0e81184e5f59bb2b268824cd199df4ff6d01cb234dee51773a3a741762b579
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with several pointing to disposable hosting domains and acting as link farms, suggesting a phishing or malware distribution scheme. The presence of external URIs and the 'link farm' heuristic strongly suggest the document's purpose is to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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 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://jacksth.ru/aws?utm_term=altec+lansing+life+jacket+jolt+instructions PDF link annotation
    • http://newuwedeza.mypressonline.com/27614854113.pdfIn PDF document text
    • http://fevinoreniwelik.sportsontheweb.net/kesizivizuze.pdfIn PDF document text
    • http://ig-copyrightnotice.com/the_prince_and_me_3_full_movie_free_onlinelf1um.pdfIn PDF document text
    • https://cdn.sqhk.co/zekafomaze/cghQNmB/difovozoz.pdfIn PDF document text
    • http://wivevadevenumet.mywebcommunity.org/boxizofuk.pdfIn PDF document text
    • http://memimusisat.getenjoyment.net/bebofetilasopogajorif.pdfIn PDF document text
    • https://cdn.sqhk.co/wejideduv/JlMhigg/spectacle_synonym_in_urdu.pdfIn PDF document text
    • http://venira.su/tazidirodiq2l73.pdfIn PDF document text
    • http://teplotronic.ru/girlfriends_guide_to_divorce_cast_episode_18k00v.pdfIn PDF document text
    • http://jojazinex.mygamesonline.org/baby_g_shock_pink_watch.pdfIn PDF document text
    • https://cdn.sqhk.co/wadalibituge/1s1ieCz/poxujowudunijebidador.pdfIn PDF document text
    • https://cdn.sqhk.co/naliwanik/ibwgdha/age_of_war_3.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/0b092612-5ffc-4337-a5e5-4e91d3248aef/sas_macro_over_list.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b11e2625-6d03-4447-bb86-7bc73848fa4a/how_to_reset_a_ge_front_load_washer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4072638-a866-416c-963f-1b47897970c9/diablo_3_save_editor_ps3_espaol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7be2d691-8af9-46b5-b196-d838905d3696/nozufudumedamanekajuke.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f245292-3582-4839-a48d-fc0442f1821d/what_is_the_theme_of_the_story_the_monkeys_paw.pdfIn PDF document text
    • http://supuwevul.atwebpages.com/26929156773.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53b7326f-21aa-4f6c-b1c1-57351ed36969/82047307835.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9006ba1a-3903-458c-8f3a-1d09e5829a4b/how_to_be_an_iso_9001_auditor.pdfIn PDF document text
    • http://gakamaxoluzes.atwebpages.com/tesidavezafivokofowitafa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b981f9c5-e5c7-45e7-bd09-55135a9ec47b/64263871033.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_off0000ca28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA28 5176 bytes
SHA-256: e8598e3a5c8ca76b5365c81f1207ffac0bee873b0aed60b5e6c90a97e54b1b23
font_01_sfnt_off0000dbe3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBE3 10276 bytes
SHA-256: eb744b27764c808563da5d7d5f5ea2afd40d42d519675fa1228ba76f63d64e4f

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