Malicious PDF — malware analysis report

Static analysis result for SHA-256 018ead371fe9d45c…

MALICIOUS

PDF

89.0 KB Created: 2021-03-29 08:10:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86ea2d83879a39570109c9d85b88aac2 SHA-1: d566a245beae3ad9c5604a8d9601b5f884432e73 SHA-256: 018ead371fe9d45c3ea761f8cc7bfd7ce7175ed23ff15cee75d9ed3ea1665260
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. The PDF contains embedded URLs that point to external websites, suggesting a phishing or malware distribution attempt. The document body, though partially corrupted, contains text related to 'very short stories for kindergarten pdf' and authoring information, which may serve as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://golowaki.ru/aws?utm_term=very+short+stories+for+kindergarten+pdf
    • http://wapividazofar.scienceontheweb.net/what_does_safety_corridor_mean_on_the_interstate.pdf
    • https://cdn-cms.f-static.net/uploads/4367313/normal_5fdbc3f5b7420.pdf
    • http://joweponula.mywebcommunity.org/55599181674.pdf
    • http://fusekimutoxi.sportsontheweb.net/88067400925.pdf
    • https://cdn.sqhk.co/mixagumidis/fxhcidy/salary_tax_calculator_2018-_19_pakistan.pdf
    • http://bulepozobagepud.mygamesonline.org/v8_engine_blueprint.pdf
    • https://cdn-cms.f-static.net/uploads/4388282/normal_604f060c73b0a.pdf
    • https://static.s123-cdn-static.com/uploads/4413458/normal_5ff0b5576d169.pdf
    • https://cdn.sqhk.co/juzurupivepo/ieixhd4/stormblades_apk_data.pdf
    • https://cdn.sqhk.co/wipedekis/4IS6sja/stress_management_techniques_for_middle_school_students.pdf
    • https://cdn.sqhk.co/wujejelot/7iciige/wadexu.pdf
    • https://cdn.sqhk.co/fodexuxefeba/gejaieD/2019_polaris_550_indy_adventure_155_es.pdf
    • http://wonujabazuvopa.22web.org/1646275164.pdf
    • http://kamefutebiwef.mywebcommunity.org/statement_of_assets_and_liabilities.pdf
    • https://static.s123-cdn-static.com/uploads/4370052/normal_5fe41c4775629.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://1dda4824-043e-406b-9213-03d4b91bb4d1.filesusr.com/ugd/7695bb_7ce07111b1914887b8f07de1b162c7b9.pdf?index=true
    • https://6b2f37ea-3696-4b87-858b-663c379f6f6f.filesusr.com/ugd/16879a_977af1dc2fb64cb7a0379bdb90ae9ba2.pdf?index=true
    • http://rasovofux.epizy.com/pepamozudi.pdf
    • https://b634734f-67aa-4edc-9b69-dcf7610e4690.filesusr.com/ugd/c86859_da7b5924b64e47c3842a79604a04c753.pdf?index=true
    • http://beperedusewigu.epizy.com/joborirojemifafudozog.pdf
    • https://29474179-7c7c-44ae-84e0-3c37792f2e25.filesusr.com/ugd/7f817d_28fcd1a1e00b423cb11e63e3c165e282.pdf?index=true
    • https://926da24b-d3df-4aea-ac1b-ebdf7359a9e7.filesusr.com/ugd/fef925_5ce5710da4c042a0a1737c9689e0bcdf.pdf?index=true
    • https://45e41439-46a4-4c97-84f0-155cfeda4cef.filesusr.com/ugd/9d7ad9_67df1d4202174dccb44455a5fd122eb8.pdf?index=true
    • https://ed21222e-fee3-4fab-8b52-e2ddb7bb35ab.filesusr.com/ugd/e73fea_1a64aa05e11845098af17018b3de37fd.pdf?index=true
    • https://6acf0ca1-aa41-4771-8b91-54baff69ee7f.filesusr.com/ugd/7d1dc9_40fa109ca0244044be1cc024856c8cbb.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000111bd.bin
85c4d3de5bbe9f230be6610e96e061311e8279c5ec04f416f7bd93cbe364a89d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x111BD 5192 bytes
font_01_sfnt_off0001236b.bin
e4950d60df42e7d9597d06bc77b77be21352ec477551e40942312cca8decd7b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1236B 10796 bytes
font_02_sfnt_off00014840.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14840 4324 bytes

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