Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2afce5696947140…

MALICIOUS

PDF

76.6 KB Created: 2021-05-06 12:29:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 8d2148e457399bf5cf2dda9b6f860dcd SHA-1: b6afc1ac11bfd5f975528298d9f671638da321ec SHA-256: a2afce56969471406608cd0cd27d8dfc7e615129135d6c329d0b6dfe0d5e9a6a
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-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://baarspo.ru/strik?utm_term=how+to+connect+water+float+switch PDF link annotation
    • http://famekeletiti.iblogger.org/87265604415.pdfIn PDF document text
    • https://cdn.sqhk.co/xadakede/dtiidnu/putitodedaponeriwes.pdfIn PDF document text
    • https://cdn.sqhk.co/nozelenid/fijjjge/world_war_z_game_ps4_gameplay.pdfIn PDF document text
    • http://pojebanidik.mywebcommunity.org/abilify_maintena_prescribing_information.pdfIn PDF document text
    • https://cdn.sqhk.co/veludewozen/o30dbnj/fesujikazivigelin.pdfIn PDF document text
    • http://fumuroruzej.medianewsonline.com/mindshift_barbara_oakley_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/monasomeb/igrgfdE/kokoxorubaxegesekava.pdfIn PDF document text
    • https://cdn.sqhk.co/zinoliwomi/jieb3sl/asteroids_game_online.pdfIn PDF document text
    • http://kufomabid.mywebcommunity.org/59826859797.pdfIn PDF document text
    • https://cdn.sqhk.co/zebapomiz/j8Sc3ij/pure_flix_movies_cost_per_month.pdfIn PDF document text
    • https://cdn.sqhk.co/jomonufo/d2jcjtX/mezajo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nonabafat/what_does_kinetic_mean_in_physics.pdfIn PDF document text
    • https://s3.amazonaws.com/pomaxa/99754147016.pdfIn PDF document text
    • https://s3.amazonaws.com/pukaridimupo/las_carceles_de_la_miseria_wacquant.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef3c27ae-c791-4e69-a0b9-22383429f3ae/37797832049.pdfIn PDF document text
    • https://s3.amazonaws.com/xepululejiwof/76263736615.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b83c5848-ed69-4adc-bc82-d028fe79c56c/bose_sounddock_portable_n123.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d9792b2-7051-49ab-b67f-35e24288e992/john_deere_750_tractor_specs.pdfIn PDF document text
    • http://bozejezetides.epizy.com/alimentos_para_diabeticos_tipo_2.pdfIn PDF document text
    • http://xajumin.epizy.com/48685953634.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a7d3fe3-15c2-4831-b384-9fff2952524e/3-6_practice_parallel_and_perpendicular_lines_form_g_answers.pdfIn PDF document text
    • http://gefuxexo.epizy.com/98107773561.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_off0000ee56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE56 5024 bytes
SHA-256: e64a14f82d4396bf8820ba0f2c711420d198e63cd09cbd783b8d77d31a9d16ce
font_01_sfnt_off0000ff78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF78 10972 bytes
SHA-256: aae1da59d6a105c87c916c66fd59df9cb2f71e3a7c0ce62fb0a56d1b5369ebc3

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