Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0d472e2018bcb09…

MALICIOUS

PDF

83.0 KB Created: 2021-03-14 12:08:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: ab0aa973c813a67a9ff97d1febf81dad SHA-1: a000562c0c537ea4d0d90ee2dbb629d4b7638c62 SHA-256: a0d472e2018bcb09a59618fa9d6bde80e02fc44ef275299f45199d1c1a3eedf6
166 Risk Score

Malware Insights

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

The PDF document is flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' suggests the document is designed to trick users into downloading an encrypted payload, likely by posing as a helpful guide. The embedded URLs point to external resources that are likely part of the attack chain, potentially serving the actual malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://gimoguvi.ru/wix?keyword=dap-1520+manual+reset PDF link annotation
    • http://chambrehub.xyz/49102663685c8e87.pdfIn PDF document text
    • http://mon-cmbretagne.com/wuranevijetonobimak7yz.pdfIn PDF document text
    • http://xofajenakimexo.iblogger.org/pangya_golf_android.pdfIn PDF document text
    • http://kaxesurodiwewok.iblogger.org/limits_calculus_3.pdfIn PDF document text
    • http://profer-opt.ru/what_is_a_hieroglyphics_in_ancient_egyptj17yj.pdfIn PDF document text
    • http://persequenteamsohbet.com/95640582086nlhhy.pdfIn PDF document text
    • http://hookup157.online/sisaxnihsv.pdfIn PDF document text
    • http://linza.media/the_way_of_kings_book_12d26w.pdfIn PDF document text
    • http://naturka.space/how_to_use_a_danby_portable_dishwasherpa4bm.pdfIn PDF document text
    • http://zirirukefup.22web.org/laser_cutting_machine_metal_sheet.pdfIn PDF document text
    • http://christmas-gift.ru/beyond_enemy_lines_2_tank_base_trainerm3osc.pdfIn PDF document text
    • http://top-salez.site/forest_wallpaper_powder_room6ln4b.pdfIn PDF document text
    • http://policyhelpcenter.com/georgia_driving_test_parallel_parking3n7kf.pdfIn PDF document text
    • http://lolkek.xyz/engineering_mechanics_statics_9th_edition_solutions0bvod.pdfIn PDF document text
    • http://wiinorama.website/wulafexezefefach2dp.pdfIn PDF document text
    • http://okrasote.info/innovative_teaching_methods_in_nursing_education0ybkd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nibijifituvi.epizy.com/punevinikogipekutudafuj.pdfIn PDF document text
    • http://damedosa.rf.gd/what_is_business_peer_pressure.pdfIn PDF document text
    • https://s3.amazonaws.com/vapite/gasigabetesu.pdfIn PDF document text
    • https://s3.amazonaws.com/jebokizez/burger_priest_secret_menu_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/dorobukasawituw/ansible_playbook_format_check.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxalowafokuvo/information_about_indian_ocean_tsunami_2004.pdfIn PDF document text
    • http://muvabeso.epizy.com/adjective_order_games.pdfIn PDF document text
    • http://banumekopi.epizy.com/aadhaar_card_in.pdfIn PDF document text
    • https://s3.amazonaws.com/tosego/betetanotifegowan.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_off00010603.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10603 5444 bytes
SHA-256: 9f41fcec30ba9619cc907cbe90db5bf418e03fdc041ffa89566c0a7a5cc1316b
font_01_sfnt_off00011882.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11882 11284 bytes
SHA-256: 0360c00c37e4da3346a95ee84674ccb59914ecfc2f5ead1adb1c620859aeceba

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