Malicious PDF — malware analysis report

Static analysis result for SHA-256 afb99de414308e56…

MALICIOUS

PDF

75.7 KB Created: 2021-03-02 16:07:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 006b8e8fb815831857312aa9d6623691 SHA-1: 424b21dc9d76094ea0026d3b97a5838ed670c42e SHA-256: afb99de414308e56e1b5b7b93ead118281342a444d9ec95cb6669dc4d1bdd1c6
126 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs that lead to disposable hosting domains, indicative of a phishing or scam campaign. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body, though heavily obfuscated, contains keywords related to game servers and unlimited coins, reinforcing the lure aspect.

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://druttle.ru/wix?keyword=ddtank+private+server+unlimited+coins PDF link annotation
    • http://fosavaxenu.mypressonline.com/denozisomukolivosifisuge.pdfIn PDF document text
    • http://idealslimitalia-official.site/is_the_konosuba_light_novel_ending4t5xz.pdfIn PDF document text
    • http://koxelovanalimu.getenjoyment.net/lunisevajadu.pdfIn PDF document text
    • http://momentshop.website/keponigunitenf2e3h.pdfIn PDF document text
    • http://ronebiwoti.22web.org/58781563675.pdfIn PDF document text
    • http://bimiwefumukiv.22web.org/general_service_agreement_contract_template.pdfIn PDF document text
    • http://dorulezebum.sportsontheweb.net/its_never_easy_to_walk_away_let_him_go.pdfIn PDF document text
    • http://fujigukatujewu.medianewsonline.com/parinuxabaxowi.pdfIn PDF document text
    • http://xuvaxujogilo.mygamesonline.org/are_all_panasonic_dect_phones_compatible.pdfIn PDF document text
    • http://fofoketezifofi.22web.org/answers_to_newsela_article.pdfIn PDF document text
    • http://rollernefrit.xyz/marimjrqps.pdfIn PDF document text
    • http://ttop-shop.com/nulumubafudowizitexonomenk5zy.pdfIn PDF document text
    • http://nokojatagi.mywebcommunity.org/45997305480.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sixuregorajaso.rf.gd/bazaar_movie_720p_filmywap.pdfIn PDF document text
    • http://jawikaginixuxuz.rf.gd/wirefiwavixinubi.pdfIn PDF document text
    • http://pidodexogejax.myartsonline.com/74646746737.pdfIn PDF document text
    • http://jowelipap.epizy.com/vuxedekusomewujefapug.pdfIn PDF document text
    • http://garubokiboja.rf.gd/apache_software_free_for_windows_7.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/formal_synonym_for_bombard.pdfIn PDF document text
    • http://guxajez.rf.gd/report_fire_hydrant_leak_nyc.pdfIn PDF document text
    • http://tokozod.myartsonline.com/wosemekejoxapu.pdfIn PDF document text
    • https://www.facebook.com/DDTANKPRIVATE?fref=tsIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d58e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD58E 5344 bytes
SHA-256: 3a215442a845dabedda555ca9b1894638e4084797d5c6232a07b510c0bff96c0
font_01_sfnt_off0000e7b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7B5 10476 bytes
SHA-256: 34bd233a31ea7903a5e4e30703b96c2c2858cfe934983560ca53fdd71171aa35
font_02_sfnt_off00010be1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BE1 16144 bytes
SHA-256: 18f56b7fae04e07bc119a468ad323bdda099da77b0772854d1c47cc1f39b9f3b