Malicious PDF — malware analysis report

Static analysis result for SHA-256 2030627776bfeec6…

MALICIOUS

PDF

147.2 KB Created: 2021-04-02 16:24:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 92c72697ad18bab8d2f3ea509d568459 SHA-1: 75eaa357748f37c433e4bde796d90f69e79bb6d7 SHA-256: 2030627776bfeec6afec6afba439a070d2e93970922913e32b03ce73aa1e42b0
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The embedded URL and a linked URL on disposable hosting suggest a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains metadata related to PDF creation and graphics APIs, likely serving as a lure to disguise the malicious nature of the links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://mezovuduw.ru/award?keyword=android+2d+graphics+with+canvas+api+pdf PDF link annotation
    • http://jaxuvarimirenu.22web.org/mejevazibutapilaxipovo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391305/normal_603c27763f95d.pdfIn PDF document text
    • http://maletewidulebil.iblogger.org/jolejanenedakeguk.pdfIn PDF document text
    • http://suzaxikuzexaw.66ghz.com/android_game_development_for_dummies.pdfIn PDF document text
    • http://wawesoja.sportsontheweb.net/96765100032.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407303/normal_5fdedee7c27eb.pdfIn PDF document text
    • https://pebogifi.weebly.com/uploads/1/3/1/4/131438694/wigidenikodamefim.pdfIn PDF document text
    • https://zerimesatevig.weebly.com/uploads/1/3/4/8/134879836/jizelupumijuw-povotikevezevan.pdfIn PDF document text
    • https://cdn.sqhk.co/gawarebadal/GgfGjh9/bob_the_robber_4_unblocked_games_66.pdfIn PDF document text
    • https://cdn.sqhk.co/tigixexaxi/h5jbicz/sago_mini_airport_app.pdfIn PDF document text
    • https://zemutixo.weebly.com/uploads/1/3/4/8/134865820/7557647.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://vesedakowata.onlinewebshop.net/bash_shell_commands.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03f567d2-06ae-46a0-94f4-b43b75f7f92d/how_to_prove_it_velleman_solutions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7170afc9-0a2e-4457-923b-6dd46cd4cf76/zarebimamekevawiwufixiboz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77010e7d-a4c7-49e8-8089-43cfcb03b957/43597521299.pdfIn PDF document text
    • http://boxitevu.rf.gd/ielts_academic_writing_task_1_questions.pdfIn PDF document text
    • http://towibetibakoku.rf.gd/why_does_my_swiffer_wetjet_not_work.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/311a0910-4417-41e4-99da-7101a400c3db/universal_logic_gates_truth_table.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00018d3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18D3D 37488 bytes
SHA-256: ee4ed30231ebb40a4b437cd2744652c3d554c472fb9a3e4bbcbe3cc776a2c95e
font_01_sfnt_off0001f492.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F492 5328 bytes
SHA-256: eca70bb0b98b1594fadef0a2bf45f0ff1005595ecbe2c08cf775d1d24c8859ae
font_02_sfnt_off000206b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x206B3 11424 bytes
SHA-256: aee3b1902fa8dd8225526d0c2ebff909cdc96148356d844eb925868baa5d5b8d
font_03_sfnt_off00022dbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22DBD 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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