Malicious PDF — malware analysis report

Static analysis result for SHA-256 f48b560de64d88e1…

MALICIOUS

PDF

74.1 KB Created: 2021-03-17 21:36:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: cee9400980ab4bd09484ca07dc5e8c92 SHA-1: 0cc011d545d808a192c59cca3abc2c5a13fd1fdd SHA-256: f48b560de64d88e1a80fa97afcde06a17809aa5495a59b9895bb4b4ef5a99abb
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

The file is identified as malicious by ML classifiers and ClamAV, with a heuristic indicating a browser extension installation lure. The embedded URL `https://xezojetit.ru/wix?keyword=hoot+free+download+pdf` likely serves as a landing page for this social engineering attempt. While no scripts were directly extracted, the PDF structure and the nature of the lure suggest potential exploitation or redirection to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://xezojetit.ru/wix?keyword=hoot+free+download+pdf PDF link annotation
    • http://zakazemakeda.22web.org/jejusimufumavapuvaka.pdfIn PDF document text
    • http://ita-yog.space/what_is_isocost_and_isoquantiievt.pdfIn PDF document text
    • http://frukt.space/958505179263bb6q.pdfIn PDF document text
    • https://vabiganivasekeb.weebly.com/uploads/1/3/4/3/134339064/f1e219122ad6f.pdfIn PDF document text
    • http://xekalabaxuv.medianewsonline.com/anthropology_books_for_upsc.pdfIn PDF document text
    • http://viewcreditscore.info/revabiverojoduluxeocq.pdfIn PDF document text
    • http://rowaxamapitowej.getenjoyment.net/brain_ct_anatomy.pdfIn PDF document text
    • https://tavutafaj.weebly.com/uploads/1/3/1/4/131482866/4352413.pdfIn PDF document text
    • http://kukushpa.fun/do_vibrating_exercise_machine_workewhl9.pdfIn PDF document text
    • http://baxagaxisatipa.22web.org/93116743498.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://8b5ac0f3-2bc4-49a6-9a99-2541af31b215.filesusr.com/ugd/f2ef67_04ce0bcd87ec4184911c87fa9b443764.pdf?index=trueIn PDF document text
    • http://jozobudesurarab.onlinewebshop.net/blood_bowl_miniatures_scale.pdfIn PDF document text
    • https://s3.amazonaws.com/dazawojob/khadya_parchi_kare.pdfIn PDF document text
    • https://s3.amazonaws.com/poresi/polaris_trail_boss_250_for_sale.pdfIn PDF document text
    • https://0298dc5a-7924-4276-8279-06452a5288da.filesusr.com/ugd/b30cf0_2dbc66682b444568843343e13b5059e3.pdf?index=trueIn PDF document text
    • https://6739ca04-605d-4ff4-b4c9-4e5bd75a7819.filesusr.com/ugd/031dda_1328c419323f4542a8b46bbfa4ce2425.pdf?index=trueIn PDF document text
    • https://b20aee1f-b1b7-4e4e-be5e-d884e4ece670.filesusr.com/ugd/10e3af_c5857fb25ae240d3966d528c1dbcd5a5.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fajonubinomeder/47952116666.pdfIn PDF document text
    • http://barirenuvekesup.epizy.com/cdc_vaccine_ingredient_list.pdfIn PDF document text
    • https://s3.amazonaws.com/somisilegex/seiko_prospex_solar_chronograph_divers_200m.pdfIn PDF document text
    • https://s3.amazonaws.com/tipikaxe/jutebegote.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e5bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5BC 4908 bytes
SHA-256: ee20bf5fa2da07b969ade7d8c5d64c436892fc60e256776605390ff596fcf938
font_01_sfnt_off0000f693.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF693 10612 bytes
SHA-256: 18b55b3a0dd559e1949cc966b3c8c4109d4eb750735391ba49a50391c4ab8f56

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