Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b6b244bf78f2f0a…

MALICIOUS

PDF

76.5 KB Created: 2021-06-10 17:29:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 4353a6295bdeec2c992518b4d41fc2c4 SHA-1: 0fad5119582d0d4f15729346124703fe67b97660 SHA-256: 2b6b244bf78f2f0ab4e34951be5a78d2ebe06b9a3382415743cf3df3e2f5ebef
126 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a phishing or malicious document, with a high ML score and ClamAV detection. It embeds a URL leading to a site promising free in-game currency, a common lure for phishing or malware delivery. No scripts were extracted, but the overall structure and embedded URL point to a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://medvor.ru/pbw?utm_term=how+to+get+free+coins+in+fifa PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4425227/normal_60c19f53d446a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392871/normal_60c1a263b185b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460982/normal_604ddc916a711.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483354/normal_6002984f68a78.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366339/normal_5ff1f3d890259.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4454045/normal_60b0012616449.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/a10d4551-3c41-4203-8084-62d148b5ef45/echo_cs_400_bar_oil_adjustment.pdfIn PDF document text
    • http://foxobekizax.pbworks.com/f/how_to_work_a_wonderwall_projector.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cbcd973c-8590-4745-8b20-c7c6cb5bf107/selaluzifinaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4cbd6bd-38e1-45de-96ed-e90914677188/big_little_lies_season_2_hbo_release_date.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bff3890f-ec22-4838-9b76-79c72b683dae/jarepakumuwixi.pdfIn PDF document text
    • http://wibajeku.pbworks.com/f/91532850718.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f4208d1-2068-48c8-971b-7de2e1c65241/caps_for_sale_book_read_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3a7f1d4-958d-4721-93c3-08d7b9c6a961/why_do_i_get_my_feelings_hurt_easily.pdfIn PDF document text
    • http://furalagaposu.pbworks.com/f/evolution_making_sense_of_life_2nd_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7661b52-fd83-4c48-b58c-1b745704607e/73465866261.pdfIn PDF document text
    • http://medodadepud.pbworks.com/w/file/fetch/144897186/captain_jack_sparrow_movie_tamil_download_isaimini.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ae6a7d1-073e-483c-9e6e-b288523feb61/baby_jogger_city_mini_gt_accessories_canada.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c47ef7e-98e7-467b-834e-14d88739d62b/wixomonebixukaxibulul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53d22534-0848-4930-be6b-f2e787709555/86103289073.pdfIn PDF document text
    • http://zanopadik.pbworks.com/w/file/fetch/144994005/all_differentiation_and_integration_formulas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3390b0db-1a9f-418a-b192-b9f6c38de87e/business_mathematics_and_statistics_b.com_1st_year.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8ad6e3e-a6aa-400e-a5f4-88971326d1e5/ariel_by_sylvia_plath_themes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f78d34bf-a060-4889-9043-b2be289b4011/fikoxufawivebupaki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fc0643f-9c26-4a50-b466-513d6e3b73bd/seserifafeniwabeg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5abe3482-1bf6-461c-b585-71b00133d756/jobezugepotibedujobudodir.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_off0000ee5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE5E 5068 bytes
SHA-256: f23c3ba209957736923b6f70f43c60bc9afbb65e24661a98851b34afadb3b07a
font_01_sfnt_off0000ffcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFCB 10776 bytes
SHA-256: 7825c28655e1045d19200c92cb50c56306302a775847bd64e05a4a80ac73225a

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