Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c888fde9bb4e250…

MALICIOUS

PDF

85.3 KB Created: 2021-03-03 21:01:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fca0a52b9b6f1f762ff2218683303464 SHA-1: 95658a021c6e84c20baad4205fc01fe786876bbc SHA-256: 9c888fde9bb4e25073224afb5b7fd03a09698de3f9e1f5f697c642770859a3f4
96 Risk Score

Malware Insights

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

The 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, which is a common tactic for phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://leonvi.ru/123?utm_term=what+does+contemporary+culture+mean+in+english
    • https://cdn.sqhk.co/nisugewameru/shageia/general_george_meade_civil_war_gettysburg.pdf
    • https://cdn.sqhk.co/wufevinek/qMANcji/95243191892.pdf
    • http://modozadubop.mywebcommunity.org/what_are_the_rules_of_sentence_structure.pdf
    • http://sesesuruko.mypressonline.com/what_is_the_magnitude_of_static_friction.pdf
    • http://vujereki.22web.org/18366746833.pdf
    • http://dumubemajizukov.medianewsonline.com/xowonozokivenetedutajir.pdf
    • https://cdn.sqhk.co/moxoxitij/fLifidk/german_truck_simulator_2010.pdf
    • http://vivekawiga.sportsontheweb.net/algebra_lineal_grossman_septima_edicion.pdf
    • http://zawugudumi.getenjoyment.net/buy_norton_psychology_reader.pdf
    • https://cdn.sqhk.co/sexifirume/ibIgdKI/katunowomolug.pdf
    • http://kusafomidufe.mywebcommunity.org/divina_commedia_inferno_canto_v_parafrasi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.opentle.org
    • http://bajipogijos.epizy.com/dinurotetuninizunijonibij.pdf
    • http://dipagepe.atwebpages.com/39400067085.pdf
    • http://namepafubi.atwebpages.com/how_much_weight_can_a_malm_bed_hold.pdf
    • http://sanubexudo.rf.gd/45057562001.pdf
    • http://gutekuretejapoj.onlinewebshop.net/multiplication_table_till_30.pdf
    • http://wojodine.rf.gd/how_to_start_freelance_article_writing.pdf
    • http://xofunuxemijowex.rf.gd/phpoffice_spreadsheet_to.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
    • http://www.gnu.org/licenses/gpl.html

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e1f9.bin
557a74c6212c88f444b91eb8a52128dc12eb434af8bfc27907c0c8259e07900b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE1F9 6128 bytes
font_01_sfnt_off0000f74a.bin
79e48bd8d32bf33ad554357072e57893f215b52a8f8b7161ea3036c3a5eac1a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF74A 5600 bytes
font_02_sfnt_off00010a33.bin
7b0e325cdbc8a4837861eead95da20640eda30b029fab84a297326b63b864949		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10A33 7108 bytes
font_03_sfnt_off00011d81.bin
75a4c70717a92e2a6a634e19a9f16b65f108dfb8348fcc1385c4ab70470c6664		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11D81 13736 bytes

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