Malicious PDF — malware analysis report

Static analysis result for SHA-256 9080b9347d5956d4…

MALICIOUS

PDF

73.2 KB Created: 2021-03-25 11:48:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: a37f532b5987ed2658e0aef33ad23e5a SHA-1: b6b2022caa239824b9295e3519ebae19722b175c SHA-256: 9080b9347d5956d43e5c3cc4a48903479a5cc6ae2f1289666ab6e022b431a796
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 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://xezojetit.ru/wix?keyword=because+of+winn+dixie+full+book+pdf PDF link annotation
    • http://hotita.fun/babylon_ad_movie_songs4rrxi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412895/normal_5ff5f361a6e1b.pdfIn PDF document text
    • http://ximoteduzax.22web.org/minecraft_bookshelf_2.3.557.pdfIn PDF document text
    • https://bozelisu.weebly.com/uploads/1/3/2/6/132695328/juravujowonil-mekobotakavep-letuj-mixufega.pdfIn PDF document text
    • http://vashe-zdorovie.xyz/download_flight_pilot_simulator_3d_mod_apk_revdl5otvr.pdfIn PDF document text
    • http://itanto.space/why_is_hbo_on_demand_not_working1pbcl.pdfIn PDF document text
    • http://mufedizoz.22web.org/lg_g29_direksiyon_seti_n11.pdfIn PDF document text
    • https://goreduve.weebly.com/uploads/1/3/2/7/132740848/440212f6f4fa.pdfIn PDF document text
    • https://gebulofafilo.weebly.com/uploads/1/3/4/7/134717894/128b80e71.pdfIn PDF document text
    • http://tufilevazoropiz.iblogger.org/63177206293.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385648/normal_600b41144a3bd.pdfIn PDF document text
    • https://maxijegiv.weebly.com/uploads/1/3/4/1/134131269/komirij-pilisunovobuzuk-juniwezageg-talelunata.pdfIn PDF document text
    • https://ginijamuda.weebly.com/uploads/1/3/1/4/131409148/vujopebunuguvo_voxita_zivituxakuxova.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://detuzepa.rf.gd/how_does_car_battery_reconditioning_work.pdfIn PDF document text
    • http://jovelabomitom.epizy.com/olla_arrocera_oster_manual_uso.pdfIn PDF document text
    • http://lokakowevokeb.epizy.com/kirchhoff_s_voltage_law_definition.pdfIn PDF document text
    • http://dubured.rf.gd/element_55_inch_tv_weight.pdfIn PDF document text
    • http://xusoloturokuk.epizy.com/salon_chair_3d_max_model_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zidenigad/crew_neck_soccer_t-_shirt_mockup.pdfIn PDF document text
    • https://s3.amazonaws.com/bejeseja/will_walmart_have_a_black_friday_sale_in_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/dosipive/84113344786.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_off0000de98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE98 5464 bytes
SHA-256: b64fcbd61cf13cc0386d6225220a78a848893795b5f1cd47e0d11057cac364df
font_01_sfnt_off0000f161.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF161 10776 bytes
SHA-256: ac216d628bbc9367a8e2f297f9a1c8cf27b965ffded7ad72b138dcb13d0d13bf

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