Malicious PDF — malware analysis report

Static analysis result for SHA-256 492b5a8bdaa4e97c…

MALICIOUS

PDF

75.8 KB Created: 2021-03-23 03:02:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 89a8659bd64a8b8a6dc8ece32af9ca25 SHA-1: d298c0009760b57c58eaa883ea8dcd6eb002c26e SHA-256: 492b5a8bdaa4e97c44bd911cdbb685a221f17d105278d37f0a1c2126971fd097
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to host a malicious payload or phishing content. The document body, though heavily obfuscated, suggests a lure related to a 'word search answers' document, a common tactic for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jumiwimov.ru/wix?keyword=chapter+2+the+chemistry+of+life+word+search+answers
    • http://promooffer.site/jijefinebigaqbpfz.pdf
    • https://cdn.sqhk.co/bizewavaxug/FQnxhir/avatar_full_movie_for_free.pdf
    • http://remont-pc.website/62218293662qsbc7.pdf
    • https://cdn.sqhk.co/sogunixe/eRIjiYY/gadgets_360_tv_review.pdf
    • http://hopecommunitynaz.com/gegiposumojetadivoxixi1nn9v.pdf
    • https://cdn.sqhk.co/guwaloxipete/gegfhfx/racing_master_manager_mod_apk_android_1.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/a62fb413-1e87-4e83-b598-1ce9fc65277d/pibamogepenumedejixen.pdf
    • https://e05bdd54-7536-4db1-b7ed-110d7b12163e.filesusr.com/ugd/dd5a80_209183cd8caf4bc0b363de712518d176.pdf?index=true
    • https://uploads.strikinglycdn.com/files/537a27b9-d8d5-4025-8251-5f5374355cac/does_a_2010_lexus_es_350_have_a_timing_belt_or_chain.pdf
    • https://s3.amazonaws.com/dukajevo/fortnite_battle_royale_online.pdf
    • https://5634f520-c25d-421d-ab67-3d94505d13cb.filesusr.com/ugd/1b85ab_6db43a4f5ea04000bc1d41b0baf16e09.pdf?index=true
    • https://s3.amazonaws.com/rujimidujek/nupawa.pdf
    • https://uploads.strikinglycdn.com/files/db899dc6-bb57-4239-8012-91272a61e786/what_are_text_structures_in_reading.pdf
    • https://s3.amazonaws.com/vokeri/arya_movie_songs_malayalam.pdf
    • https://27420876-d215-4860-9a72-f48db0d0c320.filesusr.com/ugd/4062c2_87dc225807f449cdb6ff038119d04aeb.pdf?index=true
    • https://d8d078ea-10ec-4787-8e21-ef6e32b87a24.filesusr.com/ugd/8f6098_4aaa8f106c3b447ab456b347bdd58b80.pdf?index=true
    • https://ecc4b077-82d2-4cf1-ad45-1e482560a890.filesusr.com/ugd/5d7ac5_05680b931945454aa55bf7129f551a14.pdf?index=true
    • https://033a7475-7ccb-45c1-8f1e-38fd320d48d0.filesusr.com/ugd/03a576_deeb8e46176145cbaa2487ca1241b3db.pdf?index=true
    • https://s3.amazonaws.com/jofunozuzof/division_of_decimals_worksheets_with_answers.pdf
    • https://e510c2d5-567e-4a96-89ff-abc18316baf7.filesusr.com/ugd/8a9bcc_ce94cdb7af90425595f864f9a378b170.pdf?index=true
    • https://314a97e4-cc7b-499c-a999-42b15fb65c39.filesusr.com/ugd/fa4a73_a6779f0ec87442a9b33920237f9c09c4.pdf?index=true
    • https://acfcda0b-1795-4b40-aedc-9a0bc13047ce.filesusr.com/ugd/89c6ad_74f9ba22b7274996887914dfc1b02ac1.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_off0000ebf3.bin
7da89af55817993c6a97b6ae60510ad1002ed34952f037408da004db3e863236		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEBF3 5628 bytes
font_01_sfnt_off0000ff01.bin
ada184dd4d146e548b5587764cc104a0f24a4b1101bb2576938c378f172cd30d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF01 10228 bytes

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