Malicious PDF — malware analysis report

Static analysis result for SHA-256 05505bcc502f5d80…

MALICIOUS

PDF

79.6 KB Created: 2021-02-21 08:48:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: e6d89a2cb283c674dc631763344e93b6 SHA-1: eaba53536930b842d50810e5547cb88a1bb91dbe SHA-256: 05505bcc502f5d809970982ef3658fec10366f528ea62839ef4de19e1acf6f53
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely for a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains text that appears to be a lure related to a foster home.

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://jottigo.ru/strik?utm_term=astor+therapeutic+foster+home PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4412778/normal_601b55d7de133.pdfIn PDF document text
    • https://timowerudep.weebly.com/uploads/1/3/0/7/130738780/1305672.pdfIn PDF document text
    • http://zolomakowifop.iblogger.org/63132637256.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370092/normal_6023d16375a62.pdfIn PDF document text
    • https://jubibololir.weebly.com/uploads/1/3/2/8/132814038/sugumixavalu-fusividiname-senurimadifogi-punurawino.pdfIn PDF document text
    • https://nalivugubogepa.weebly.com/uploads/1/3/0/9/130969323/jexugexevapekem_vanezemifuwarix_letozuda.pdfIn PDF document text
    • http://it50life.pro/lmsz_polisler_2_trke_dublaj_izlel83tk.pdfIn PDF document text
    • http://sokfresh.fun/617926089104druc.pdfIn PDF document text
    • https://wepizowo.weebly.com/uploads/1/3/0/8/130813330/niziwixumupar-wijigewa-zatori.pdfIn PDF document text
    • https://zodekunomaxuj.weebly.com/uploads/1/3/0/7/130739112/zobofulolotupir-nalifevuzefa-xoguveregu.pdfIn PDF document text
    • http://shop-profildoors.ru/swayam_prabha_app_freejyq8b.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/laradusa/70701807963.pdfIn PDF document text
    • https://s3.amazonaws.com/nilafafakem/securecrt_file_from_server.pdfIn PDF document text
    • https://s3.amazonaws.com/libosokune/oncotype_dx_report.pdfIn PDF document text
    • http://xosareregaka.epizy.com/lananozaluxepowa.pdfIn PDF document text
    • https://s3.amazonaws.com/rumezo/86433856030.pdfIn PDF document text
    • http://dulefuzobov.rf.gd/cisco_firepower_4000_datasheet.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_off0000ea36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA36 4988 bytes
SHA-256: 79f7e9bcb8b675e051bd98091f59f20704400fc1e645fd6b9a491748d2d41045
font_01_sfnt_off0000fb38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB38 11956 bytes
SHA-256: 63b306f6a38bb9c3ec2f4d554503f3ffe4c7c889e00ea89056a42fafdeaa807e
font_02_sfnt_off0001235b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1235B 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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