Malicious PDF — malware analysis report

Static analysis result for SHA-256 179ca7050b4f7778…

MALICIOUS

PDF

100.4 KB Created: 2021-03-23 21:09:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 5141812548a90d90fa3677d5da04d84c SHA-1: 8610685864567055208faa4038390a2be6ca4baf SHA-256: 179ca7050b4f77788e05e4111ffc9ed8141a2a71c6df405d64a85b419dbe7162
66 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://leonvi.ru/strik?utm_term=collect+all+shadows+over+bogenhafen+cosmetics+items PDF link annotation
    • http://wowezixuxaxu.22web.org/livro_de_cabala.pdfIn PDF document text
    • https://cdn.sqhk.co/kubepugemaki/idgdhib/fijokasewowu.pdfIn PDF document text
    • https://cdn.sqhk.co/zasokolof/hhicjfQ/five_sisters_thai_food.pdfIn PDF document text
    • http://helpcenterbusiness.xyz/how_to_know_if_your_starbucks_card_is_registeredxlts6.pdfIn PDF document text
    • http://ing-jobs-opportunities.com/64587473530d7v4z.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447089/normal_6051f7d397940.pdfIn PDF document text
    • https://cdn.sqhk.co/bexamajuw/ZMQ0ifR/wipesupis.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389586/normal_5fdf122eb48c1.pdfIn PDF document text
    • https://cdn.sqhk.co/tipapija/hdDwjiB/caption_property_of_command_button_in_vb.pdfIn PDF document text
    • http://agentsoft.space/samsung_6100_vs_63000ofrc.pdfIn PDF document text
    • https://cdn.sqhk.co/sevigexew/jhd0ih8/followers_on_instagram_buy.pdfIn PDF document text
    • http://kuvonej.iblogger.org/niximi.pdfIn PDF document text
    • https://cdn.sqhk.co/pixafosabow/hdvicj1/superhero_city_game_mod_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/pogadidotilu/hagdjdr/funny_ringtones_download_mp3_for_mobile_pagalworld.pdfIn PDF document text
    • http://waxevamebe.22web.org/base_de_dados_definio.pdfIn PDF document text
    • http://fofesivolu.iblogger.org/clear_google_search_bar_history_android.pdfIn PDF document text
    • https://cdn.sqhk.co/wevosevob/e3xifif/vanilla_wow_leveling_guide_shaman.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fuzemonuxeli.rf.gd/original_greek_bible_translation_to_english.pdfIn PDF document text
    • http://sevixazoma.rf.gd/how_to_use_fluid_simulation_in_blender.pdfIn PDF document text
    • http://rakemexovujepez.epizy.com/1334167532.pdfIn PDF document text
    • http://rezekov.rf.gd/lisowewox.pdfIn PDF document text
    • http://wirileso.epizy.com/descargar_de_cero_a_uno.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_off000148fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x148FC 5632 bytes
SHA-256: 0a1f6d100fdc93a126295066e6b2ace0ab337cce4bf0998ac1a2256bbd39810c
font_01_sfnt_off00015c0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15C0D 11924 bytes
SHA-256: 0d501deb27af0e3a399ebbc390ccd01a8e7ba0e2a4f9111c5f20f41cee91acd3