Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa7214a8700a4776…

MALICIOUS

PDF

81.4 KB Created: 2021-02-22 07:58:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 4a900d46950d5716dae0f14f39ad5155 SHA-1: cb849005b402041117a1cb841f86e25e6957ca05 SHA-256: aa7214a8700a4776247b508eedfe5d8f6b413c3952c8e6b30a86ff3adfdf5b57
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, likely intended for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to trick users into visiting malicious sites, potentially leading to further compromise.

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/strik?utm_term=american+standard+thermostat+error+codes PDF link annotation
    • https://jefamozalubibul.weebly.com/uploads/1/3/1/4/131438275/tatunesezim.pdfIn PDF document text
    • http://iciapp.xyz/74830335598q6u83.pdfIn PDF document text
    • http://wildber.store/free_pattern_writing_worksheets_for_kindergartenzoy8p.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417990/normal_60248338bc918.pdfIn PDF document text
    • http://dkblogin-de.com/bahubali_movie_ringtone_pagalworldbpz6e.pdfIn PDF document text
    • http://powerhdniy.space/14150210673cnq0t.pdfIn PDF document text
    • http://formverifiedbadge.com/951811320661yxy1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4531523/normal_60241335365b0.pdfIn PDF document text
    • http://drive4mclaneeffingham.com/780383165677k836.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474723/normal_5fd3bc17c02fd.pdfIn PDF document text
    • https://cdn.sqhk.co/foropogajag/e3YWBhf/74049721787.pdfIn PDF document text
    • https://cdn.sqhk.co/vodadavubex/q6Wkge7/penanu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/vabedafozo/atheros_lan_driver_win7_32bit.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/perry_chemical_engineering_handbook_8th_edition_download.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/64084341619.pdfIn PDF document text
    • https://s3.amazonaws.com/donake/jafuravinusodesupobedobed.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f725.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF725 4924 bytes
SHA-256: eecf11946cfd4f50e116f10c5841bb3aee2acf8b0d6e012efb4eb873aba2e5e1
font_01_sfnt_off0001079c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1079C 10236 bytes
SHA-256: e91c23383df579d6d4034d3fd67af86ade35fd673314e6e1df48e08020a3addb
font_02_sfnt_off00012a54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A54 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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