Malicious PDF — malware analysis report

Static analysis result for SHA-256 df9ebea682ac9c9e…

MALICIOUS

PDF

84.2 KB Created: 2021-03-24 13:53:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57c63a588a1bbf956084321eeca98ec8 SHA-1: d74046c17200964a9bd8962be18e629fdf5fcab9 SHA-256: df9ebea682ac9c9eda8177d2cfe730ecc9a4fedb258024eb2a012ef77772d0b3
96 Risk Score

Malware Insights

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

The PDF contains numerous external links, many of which are part of a link farm designed to manipulate search engine results. The primary URL, 'https://leonvi.ru/wix?keyword=warlock+spell+slots+explained', suggests a lure related to gaming or fantasy content to attract clicks. While no scripts were directly extracted, the PDF structure and heuristic firings indicate a malicious intent to redirect users to potentially harmful or deceptive websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • 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/wix?keyword=warlock+spell+slots+explained
    • https://cdn-cms.f-static.net/uploads/4478133/normal_602b37e5195d8.pdf
    • https://cdn.sqhk.co/sunidoxil/hf2gdhd/mit_app_inventor_screenshot.pdf
    • https://cdn.sqhk.co/vabolepibe/gegflij/pro_football_players_40_yard_dash_times.pdf
    • https://cdn.sqhk.co/molavagew/ZCzijjc/literacy_board_games_printable.pdf
    • https://cdn-cms.f-static.net/uploads/4420930/normal_604dde10e7723.pdf
    • https://cdn.sqhk.co/devepogisog/jaRxmig/loudest_alarm_clock_sound_on_iphone.pdf
    • https://static.s123-cdn-static.com/uploads/4376625/normal_5ff6988f3061c.pdf
    • http://patedeziw.mypressonline.com/39405459704.pdf
    • https://cdn.sqhk.co/ruwonumatag/ehjjjBz/battlelands_royale_skins_hack.pdf
    • https://cdn.sqhk.co/lidojuxuxiro/aiaiaI4/agl_energy_annual_report_2015.pdf
    • https://cdn.sqhk.co/silakozafi/iicnThe/49836043222.pdf
    • http://gatowixipeba.mywebcommunity.org/fluency_rate_accuracy_prosody.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://2d130471-2a64-48ba-87cf-8f1e86c6acad.filesusr.com/ugd/9c43ec_710cabc3930244dfa7956fad81ea58fa.pdf?index=true
    • https://f78a7b13-e75c-4ddc-9f3c-03cd83736f6c.filesusr.com/ugd/90c53f_8c00f4a536ca4f50897ebc43c10415e7.pdf?index=true
    • https://9e77dbea-16d6-438e-9859-4a68c5388828.filesusr.com/ugd/3225da_144fe8d3ba6a4325bd6940b29e4c9410.pdf?index=true
    • https://52431b39-7396-4b0c-bcaf-ab72d449a1bf.filesusr.com/ugd/f8cef3_335462c6f0a241b18f888bc33918c7e2.pdf?index=true
    • https://da5bec28-7969-4117-8ffb-5069fce5e80c.filesusr.com/ugd/31593d_1b0f207fba534ad8a8cabac63fe62a58.pdf?index=true
    • https://2fe0a9f4-4d23-48c4-8711-d5fb25093877.filesusr.com/ugd/683a75_5dd3f05c581842458fdc796be3f26446.pdf?index=true
    • https://91e55214-10ad-44cf-a10a-60a9392df58b.filesusr.com/ugd/e1c37d_0c860279af6f4f1fb4b231f360a17280.pdf?index=true
    • https://ac4cd5cf-e861-4b1b-a585-e47049f737a6.filesusr.com/ugd/843280_913e867c1fe74975bb9b13d9bf4f2a84.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000100d1.bin
1d38d66ebd236a9ae3e7dc16a4c24ca5e236fce7639d69f0416f8c4febf30cd1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x100D1 5000 bytes
font_01_sfnt_off000111e9.bin
22d9e982300ebbe202d55398ef663694b735d64010024fe7e6cc79b1e0e692dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x111E9 10236 bytes
font_02_sfnt_off0001351d.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1351D 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.