Malicious PDF — malware analysis report

Static analysis result for SHA-256 e387b2e243d23698…

MALICIOUS

PDF

75.0 KB Created: 2021-05-12 22:44:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: b1cfafd3cf3b49e00e491d676b0000d0 SHA-1: b8c5abb75e2fb4aa4160759d635b26d4346a1dec SHA-256: e387b2e243d23698dec28882370b2dcf0c4b644123374fb66295192845daa94a
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 0.9991

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://lozipotod.ru/strik?utm_term=how+to+program+bose+500+remote PDF link annotation
    • http://begimewabifax.getenjoyment.net/algebra_2_cpm_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/najafizox/dujcwgg/shrek_all_star_smash_mouth_letra_en_espanol.pdfIn PDF document text
    • http://momsmall.space/alejo_carpentier_biografiaadaos.pdfIn PDF document text
    • http://gukevipagopu.mywebcommunity.org/texas_instruments_ti-30x_iis_solar.pdfIn PDF document text
    • http://theandyhong.com/how_to_open_honeywell_thermostat_to_replace_batterysnjkr.pdfIn PDF document text
    • http://befotuke.mywebcommunity.org/does_powerlifting_build_muscle.pdfIn PDF document text
    • http://kirudikegopoded.sportsontheweb.net/55071621164.pdfIn PDF document text
    • http://aydym.club/who_is_the_richest_billionaire_in_the_world_20208y4q5.pdfIn PDF document text
    • https://cdn.sqhk.co/lorotukogof/6mhcgiT/legopu.pdfIn PDF document text
    • http://bagomebefekixob.getenjoyment.net/83085571462.pdfIn PDF document text
    • https://cdn.sqhk.co/buganisazobu/jhjezy7/97751858350.pdfIn PDF document text
    • http://lifipumajetug.22web.org/cathode_ray_tube_journal.pdfIn PDF document text
    • http://espaceabonne.com/15021651028rboay.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://uploads.strikinglycdn.com/files/f6e62aac-12a3-4608-8f04-b743d4ed8487/segundo_grado_lecturas.pdfIn PDF document text
    • https://s3.amazonaws.com/fotepopunaj/descargar_google_classroom_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/faduxodiwo/riliwijavexilid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a588aa39-eba8-4965-af5f-4d5518c8f3d9/tc_flashback_x4_power_supply.pdfIn PDF document text
    • http://fezisiw.epizy.com/building_construction_report.pdfIn PDF document text
    • http://magijet.epizy.com/17404229587.pdfIn PDF document text
    • https://s3.amazonaws.com/sosupejuxofedo/gikedinamapar.pdfIn PDF document text
    • http://pavinudoj.epizy.com/doodle_cricket_game_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/fakuguvil/golafatenuxoxidufefa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6adc96d9-05fb-4e79-80b3-5f64b0af16c4/canon_7d_430ex_ii_wireless.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_off0000dccf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCCF 5200 bytes
SHA-256: d5245d63367b8fa98773efffff80df34fed3ef46e8cbbcb64c22b1de7e54d982
font_01_sfnt_off0000ee86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE86 9940 bytes
SHA-256: 583cef90fcba18a3edc1af7146d0fdc3199e262601d681535e50fa487f68993b
font_02_sfnt_off00011096.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11096 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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