Malicious PDF — malware analysis report

Static analysis result for SHA-256 00219449a192936d…

MALICIOUS

PDF

78.2 KB Created: 2021-03-15 22:33:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fea22be4190729410d0da3066a2bc237 SHA-1: 7ca92d2995c3e2f2a20cbeb8ecd732d59dd9e22b SHA-256: 00219449a192936d6029017d94b071df3345a54d20ae1a89db860d936e7e5db8
126 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many of which are hosted on disposable domains, suggesting a link farm or phishing attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to sites hosting malware or phishing content. The document body's reference to 'epic summoners mod apk' serves as a lure to entice users to click the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://nipisod.ru/wix?keyword=epic+summoners+mod+apk+1.0.0.155
    • http://kerutugizuxig.mygamesonline.org/how_many_carbs_in_large_dunkin_donuts_coffee_with_cream.pdf
    • http://kulotufiw.mypressonline.com/tedemusunejaw.pdf
    • http://tuzogat.sportsontheweb.net/attack_on_titan_season_3_explained_youtube.pdf
    • https://dawipufa.weebly.com/uploads/1/3/3/9/133986453/9341004.pdf
    • http://vaxiliwu.medianewsonline.com/50705441662.pdf
    • http://nebofimanigi.sportsontheweb.net/95415688644.pdf
    • http://radewilagimalap.iblogger.org/balistica_forense_mexico.pdf
    • https://xonajababivoxo.weebly.com/uploads/1/3/4/0/134040492/3710170.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://figupowogo.rf.gd/hp_photosmart_c4580_wifi_setup.pdf
    • http://dotutamuvubes.epizy.com/saxamopafufow.pdf
    • https://c38d9960-f3a4-46a0-b266-cfc7836dd0ed.filesusr.com/ugd/a8d9c8_fc2ea3d58502420f888a7019aeeeea74.pdf?index=true
    • https://0ac950e2-707a-4e47-8bf4-daface0ea9db.filesusr.com/ugd/356f11_9fe5c70577674744a5d2c7ccac8b6009.pdf?index=true
    • https://uploads.strikinglycdn.com/files/38f530e2-5144-45c8-883f-e59569d806ad/37901531357.pdf
    • http://duxegejuw.atwebpages.com/digejiwedagiboxatibolum.pdf
    • http://zubiluwetij.myartsonline.com/munoxatuvoxotu.pdf
    • https://081e7fb2-604d-424b-9b75-a58d54a71a44.filesusr.com/ugd/abd6ea_e04bc849a0174c87ac3573bff0cbe146.pdf?index=true
    • https://dab7fb03-f2af-4a8e-9cb9-31de623bedb3.filesusr.com/ugd/58b596_5edb54f2bb834ed9812f90efbcda09a9.pdf?index=true
    • http://bokepomi.onlinewebshop.net/adda247_puzzle_and_seating_arrangement_book.pdf
    • http://woranuganavot.myartsonline.com/does_procreate_create_vector_images.pdf
    • http://duziroro.myartsonline.com/pathogenesis_of_benign_prostatic_hyperplasia.pdf
    • https://uploads.strikinglycdn.com/files/ee37efe0-d9af-45a6-bd05-053f46f656c0/wasudusibarize.pdf
    • https://uploads.strikinglycdn.com/files/15eb76c1-b7ef-4a76-bde4-e3b0f9405121/46923814425.pdf
    • https://64e18f06-8a0e-4dc1-8427-9dd81b4bff36.filesusr.com/ugd/baa514_3e08e4a890d241929244a4ba3b16da0b.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0d8.bin
185e8a493d30b18caad70f1fbd55b82e21c23f2060c05e7fc8610815d630b54f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF0D8 5560 bytes
font_01_sfnt_off000103be.bin
2711cec1ffd6e7f98709abdbb8f281747fe674a47ffef15ab9c8a3252d044606		 pdf-font-stream PDF embedded font (sfnt) at offset 0x103BE 12164 bytes

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