Malicious PDF — malware analysis report

Static analysis result for SHA-256 28feb3c55a623577…

MALICIOUS

PDF

86.4 KB Created: 2021-03-20 20:27:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 48f344f900a9ec4a6089df1baa334970 SHA-1: 90fdc6ef35a85635be7919ec2f40361de9efe700 SHA-256: 28feb3c55a623577b81403f9ffc2ab08d37b31f8194d10d377a39bed743b1f68
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://druttle.ru/wix?keyword=cleveland+browns+training+camp+seating+chart PDF link annotation
    • https://cdn.sqhk.co/neruxojus/7heghjg/garasoxoduwedazekuw.pdfIn PDF document text
    • http://eagleaff.com/what_is_the_molecular_structure_for_o2ryna6.pdfIn PDF document text
    • http://zatorigixoluji.iblogger.org/kojomer.pdfIn PDF document text
    • http://zosujisa.22web.org/minecraft_ps4_brewing_guide.pdfIn PDF document text
    • http://levantegroup.net/88481849759z94b8.pdfIn PDF document text
    • http://xigirirata.22web.org/what_are_the_features_of_report_writing.pdfIn PDF document text
    • http://qqkaxes.xyz/bejeweled_classic_for_pc6de2a.pdfIn PDF document text
    • https://cdn.sqhk.co/gozajare/d82oXLH/40363005565.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
    • http://boraxatisota.rf.gd/pilejodexuxolepabasata.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bb79231-7e19-4f4b-a433-0fc9199cc212/17971004129.pdfIn PDF document text
    • http://fofifalog.rf.gd/automatic_transmission_vs_manual_transmission_ppt.pdfIn PDF document text
    • http://zusewijoje.epizy.com/candy_crush_saga_apk_unlimited_gold_bars.pdfIn PDF document text
    • http://mesujitoz.epizy.com/unearthed_arcana_races_5e.pdfIn PDF document text
    • http://feloxokarapuj.rf.gd/xixewowonajul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca2fbb30-e3a2-4f49-a05b-69ff71518915/tracfone_galaxy_j7_sky_pro_specs.pdfIn PDF document text
    • http://kotokadi.rf.gd/sharp_aquos_quattron_troubleshooting.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2630e2f-3057-46e1-8eb5-eb05dbc055e0/geborelexivaru.pdfIn PDF document text
    • http://gofosuxubajo.epizy.com/integers_word_problems_worksheets_grade_8.pdfIn PDF document text
    • http://favukimasinete.rf.gd/autodesk_revit_2014_crack.pdfIn PDF document text
    • http://loxeputogojew.rf.gd/homophones_worksheet_tes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea67f683-af41-4f01-bd38-42125c3c4db7/pivupuravomuvizi.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000104e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104E9 5588 bytes
SHA-256: 4ac93fde66580c96a6861a1da3cf3f34028665a2012ea3d14aa5966260d55bb2
font_01_sfnt_off000117cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117CB 11232 bytes
SHA-256: de6fecc6a3d34223ae9f091c4e28aa5c9ab1608775d6115d3b23267d9e9cf76b
font_02_sfnt_off00013e04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E04 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

Open this report in the interactive analyzer, or submit your own file for analysis.