Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cb1b22989f2a839…

MALICIOUS

PDF

82.4 KB Created: 2021-04-26 04:19:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae3aba30abb5972a2c5b3707643bb6b0 SHA-1: 935398e713c6fe330d27895d2ee6c7dd7c3ecc06 SHA-256: 1cb1b22989f2a83958926f255584ef6661d57314795a16ff35e269a53b13b1e7
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to a suspicious domain, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, includes text that appears to be a lure related to 'Jesus message in tamil 2020', likely intended to trick the user into visiting the linked URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ponafet.ru/strik?utm_term=jesus+message+in+tamil+2020
    • http://vkysnaya-eda.site/relezak4x2l3.pdf
    • http://robolab.one/school_of_dragons_monstrous_nightmare_on_firekk0b1.pdf
    • http://registrat.space/kibisufivabinimaxuwexqiz.pdf
    • https://cdn-cms.f-static.net/uploads/4376099/normal_6059bac189459.pdf
    • https://cdn-cms.f-static.net/uploads/4416796/normal_601886549a659.pdf
    • http://shopyou.online/categories_gramaticals_exercicis_primariahhdtn.pdf
    • https://cdn-cms.f-static.net/uploads/4474736/normal_5fd1f87bdcd5d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/33dadf25-9600-442e-8135-2eeef1994680/wosisovijenawopuwipekoli.pdf
    • https://s3.amazonaws.com/paxunu/77818619515.pdf
    • https://s3.amazonaws.com/jidagafinuxesu/tuxerubasumazijadevene.pdf
    • https://uploads.strikinglycdn.com/files/47fb5ec7-81ef-4529-996f-88c16112b449/sub_zero_650_ice_maker_troubleshooting.pdf
    • https://s3.amazonaws.com/mudurixo/what_is_the_closest_synonym_for_progressivism.pdf
    • https://uploads.strikinglycdn.com/files/283e1f15-3302-4e69-adfc-76cf7e633ebc/jubekasufesi.pdf
    • https://uploads.strikinglycdn.com/files/3ff61e76-bec5-494e-9a68-14c2e2080a1a/hp_officejet_7610_printhead_replacement_part.pdf
    • https://uploads.strikinglycdn.com/files/2165c246-db12-45db-88ed-5cdc3b4cdd44/41163254615.pdf
    • https://s3.amazonaws.com/kisimujuk/learn_english_grammar_step_by_step_in_telugu.pdf
    • https://uploads.strikinglycdn.com/files/c4f2c484-69cb-4e3f-9fce-6b834829f372/togonidimuxiwawejojewi.pdf
    • https://uploads.strikinglycdn.com/files/b7de974c-eaeb-4783-bbc3-be1a54169599/19414498693.pdf
    • https://uploads.strikinglycdn.com/files/b5072910-a9bd-486d-8359-f8385da9e26f/tokyo_ghoul_season_2_episode_1_plot.pdf
    • https://uploads.strikinglycdn.com/files/3a08fa38-b757-4ffd-b592-31fb71988404/62939756078.pdf
    • 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_off00010659.bin
6fadd6f77324ffee1dbdb2b73c106bb4229a8bb46d8231495bc99078957f4af2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10659 5172 bytes
font_01_sfnt_off000117dd.bin
a349aabb883ecb4fc982cc8d53d02e62eac3956504cf60eb73f9869ead620257		 pdf-font-stream PDF embedded font (sfnt) at offset 0x117DD 10768 bytes

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