Malicious PDF — malware analysis report

Static analysis result for SHA-256 d01bb5204875a7aa…

MALICIOUS

PDF

134.2 KB Created: 2021-03-30 13:13:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 30adbac57b51e0b5a63e9b5e2468505d SHA-1: bf08f7631978e01dec3e07a4a0f4c4d6ed3d4ecd SHA-256: d01bb5204875a7aa57e28041ea5a50fa4156d05540264b5f855422c289c98e1c
96 Risk Score

Malware Insights

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

The file is a PDF that contains embedded URLs, one of which is flagged as a high-risk phishing/trojan distribution point. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to regulations, aiming to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://midufefew.ru/award?keyword=canada+s+ballast+water+control+and+management+regulations+pdf
    • https://duvozeja.weebly.com/uploads/1/3/0/7/130739152/nepazizof-vizozam-likikamevitupev-banuparakideduf.pdf
    • https://cdn-cms.f-static.net/uploads/4485801/normal_600f2d1c95714.pdf
    • http://galoomer.online/762489577944x3nm.pdf
    • https://sokuvefababadax.weebly.com/uploads/1/3/1/8/131856373/2052825.pdf
    • https://cdn-cms.f-static.net/uploads/4447097/normal_602089a8a4d91.pdf
    • http://parhelifrl.space/asp.net_core_partial_view_form_postd8wch.pdf
    • https://static.s123-cdn-static.com/uploads/4472788/normal_6001d54e9e3d4.pdf
    • http://b0xberry.online/990654071985awhk.pdf
    • http://bimoriz.getenjoyment.net/15031549425.pdf
    • https://dapazigozasonim.weebly.com/uploads/1/3/4/4/134466252/88012ec2132.pdf
    • https://lavafijaxeb.weebly.com/uploads/1/3/0/7/130740432/c58d94126.pdf
    • http://espaceclient-cmb.com/22410387420y5rh1.pdf
    • https://vawuzusafut.weebly.com/uploads/1/3/4/8/134863851/talufamu.pdf
    • http://kovuzaxaf.medianewsonline.com/mezevumalazijabidu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://rubujizuz.epizy.com/kibagobafadawi.pdf
    • http://bilofudako.onlinewebshop.net/barium_meal.pdf
    • http://wumepudefix.rf.gd/46800221584.pdf
    • http://xaxelajifamukas.rf.gd/lugigugax.pdf
    • https://s3.amazonaws.com/wefemabeni/aves_sin_nido_descripcion_de_los_personajes.pdf
    • http://suvusere.epizy.com/laguna_madre_fishing_guides.pdf
    • http://zasuridedowimam.rf.gd/jupusoka.pdf
    • https://s3.amazonaws.com/dumupa/baltimore_city_police_report_form.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001bab4.bin
b08e4714b41aed2cd20ce02f8f614e604a6d420407e48a739b0a1063b4590151		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1BAB4 5612 bytes
font_01_sfnt_off0001cdc7.bin
209b02ae2bf2c9281fe8558488b19510ecb8ed6ee18cf5ed75d890abc97b9464		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1CDC7 12308 bytes
font_02_sfnt_off0001f658.bin
5b0d2701ab39d2f69c66d7d16c60d8db0b323aa0832947137e757b5401d27330		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1F658 16060 bytes

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