Malicious PDF — malware analysis report

Static analysis result for SHA-256 df9338303fe520ee…

MALICIOUS

PDF

69.1 KB Created: 2020-12-01 08:52:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 29f99e1dc320615e607c50b515e8c30d SHA-1: edd0e1e433a8f5594b653a040a5d4d2a833cc90f SHA-256: df9338303fe520eead95263bc018dd1a265605408977e3fb9546fbd2c4a8c55f
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a domain associated with phishing. The document body, though heavily obfuscated, appears to be a lure related to Excel spreadsheets, aligning with the phishing URL's query parameter. ClamAV and ML classifiers also flagged this PDF as malicious, indicating a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffnew.ru/aws?utm_term=how+to+sort+excel+spreadsheets+alphabetically PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc0d4c78139af037644e8c4/t/5fc21e934f9837572027d93c/1606557333086/12605526657.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2c9392bbd74065812d409/t/5fc505dc3f75b1664371de39/1606747613135/88671267320.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7714e9f8-be9b-4105-b53c-ab1c602b6b1a/pixuto.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0805cd49dd12447321748/t/5fc3b1e2173fb5383b1418aa/1606660578124/comparison_of_photosynthesis_and_cellular_respiration_worksheet_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19d45cfd-3ff0-4cf9-91d4-8692620ac9a1/potezujuwumepoxer.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf49f91972c46e3c94db3b/1606371833692/watertown_ct_dmv_hours.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc952f99-eca9-4e76-b130-9e2aab2daa43/24597513639.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7db38efb-29db-45f6-bbe6-bde3234ba34c/gixuvu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2408640a-2add-474d-9e1f-4a73872be007/catedral_de_beauvais.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc13d0827a199023ab79d37/t/5fc4b0d9eaf37e3b6430d759/1606725850737/xogurafubofurujitunojatu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e335a5bc066edfa5a857/t/5fc14663f8cdb769c61264ee/1606501987881/angry_birds_luca.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf1d61af5bf52c32659b9/1606218198548/backyard_baseball_online_multiplayer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/891e6f96-9b0c-4680-b5c6-572f8e47f512/guwegexavanefigozemuw.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_off0000cf7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF7A 5524 bytes
SHA-256: be2e5fc809be1964195866e5a2cfddc9bd56e20041b4f69c238fb4e3568c8310
font_01_sfnt_off0000e24b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE24B 10828 bytes
SHA-256: e0fd2273655d28d672684d6c12946e43b6d69211c2bcbf0a88be3b667e4a4917

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