Malicious PDF — malware analysis report

Static analysis result for SHA-256 3863854da066bd2e…

MALICIOUS

PDF

78.9 KB Created: 2021-03-07 04:49:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: e11269a8fcf17dd9be0c185bc05cd28e SHA-1: f22e43a17a6820a4701bb4ad15e8885ac982760b SHA-256: 3863854da066bd2e7006315c5ed990047b5fc112aa3ea753316431404c29111f
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The document contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the presence of embedded URLs and the overall classification suggest the document is designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://maypoin.ru/wix?keyword=beverly+hillbillies+season+1+episode+guide PDF link annotation
    • http://jenirafona.22web.org/obermeyer_size_guide.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446773/normal_601b7aea5d676.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502246/normal_5fc5a0509606f.pdfIn PDF document text
    • http://vanesifonemume.22web.org/6342668320.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467032/normal_5fc6d47c4b7c4.pdfIn PDF document text
    • http://watizizilumu.22web.org/generate_debug_apk_react_native.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454419/normal_5fcc6e68c30bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489607/normal_60199a8d4988b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408992/normal_5fd102b211877.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://viveguwoxifug.epizy.com/what_type_of_sensory_neuron_would_likely_respond_to_the_green_light.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1eec929-7a3b-48ee-8653-8bebdb2de877/48074641509.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/99079491113.pdfIn PDF document text
    • https://s3.amazonaws.com/pugomonapoxuxe/apc_back-ups_xs_1000_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2630e2f-3057-46e1-8eb5-eb05dbc055e0/geborelexivaru.pdfIn PDF document text
    • https://s3.amazonaws.com/gafedupeba/gejexijupazaxunovojitew.pdfIn PDF document text
    • https://s3.amazonaws.com/kegovev/esc_dilated_cardiomyopathy_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/mijumomub/81382350178.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87e44173-0eac-4420-8e2b-89cf048c7f3f/california_economic_loss_rule_and_negligent_misrepresentation.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/91403073077.pdfIn PDF document text
    • https://s3.amazonaws.com/pubopelej/nuzelebi.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_off0000f668.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF668 5624 bytes
SHA-256: 45e7ff89c18eaa408ff7adfdaedfab0f4a550206775fb8a231764fdf17ea043e
font_01_sfnt_off0001098d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1098D 10720 bytes
SHA-256: 9aaca928fecd8e112b3ee1717d1ef0377a5870429aaa447041f847e7f0570061

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