Malicious PDF — malware analysis report

Static analysis result for SHA-256 0050275dd776635c…

MALICIOUS

PDF

98.2 KB Created: 2021-03-30 10:50:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 0efc1f8a42450c607bcb55ae585cbf89 SHA-1: ef0e7001b82beb9d2f1482de40a7f2d5d4cf8283 SHA-256: 0050275dd776635cee785016047db731a6d5e52e61d186815216f86f2a3a4963
126 Risk Score

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 0.9995

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://soxebez.ru/wix?keyword=neko+atsume+cat+guide PDF link annotation
    • http://fuzubijixulux.mygamesonline.org/administracion_de_pequeas_empresas_anzola.pdfIn PDF document text
    • http://wisitens.online/how_to_reset_airbag_light_on_chevy_coloradobz59u.pdfIn PDF document text
    • http://generalmassage.online/tres_metros_sobre_el_cielo_subtitrat_in_romana_partea_3en239.pdfIn PDF document text
    • http://ppl-nutrshopfit.website/pekifozifufiwuvlf18u.pdfIn PDF document text
    • http://menbp.online/tibixabiripinegukebeb0yulx.pdfIn PDF document text
    • https://cdn.sqhk.co/ketiwuvogi/jTgfugd/gta_sa_android_street_fighter_mod.pdfIn PDF document text
    • http://pochta-24.cc/wuzisubatawogatyvg8d.pdfIn PDF document text
    • http://tepugorotewole.medianewsonline.com/milerimafemiwu.pdfIn PDF document text
    • http://natiral.space/fudogafefujubinasaseluy438r.pdfIn PDF document text
    • http://espaceabone.com/babozumatudolenogikesodkxt5v.pdfIn PDF document text
    • http://wusator.mygamesonline.org/lozomutebadepef.pdfIn PDF document text
    • https://cdn.sqhk.co/jijasitov/gehaP8n/rush_hour_full_movie_for_free_online.pdfIn PDF document text
    • http://oneitstore.pro/xesegipunapulevipivvp6x.pdfIn PDF document text
    • http://nasufulorejuwe.mywebcommunity.org/92157277537.pdfIn PDF document text
    • http://odebayitrafikhizmeti.com/gefebogakemovupbskht.pdfIn PDF document text
    • https://cdn.sqhk.co/bulenupulabo/jbgfjbb/nfl_standings_2020_nfc_east.pdfIn PDF document text
    • http://rollernefrit.xyz/wowawowodavuefvbe.pdfIn PDF document text
    • https://cdn.sqhk.co/feketukadoz/hclgfeg/.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/kozewuposoridil/tivaxuzabudedasijageder.pdfIn PDF document text
    • https://s3.amazonaws.com/supefujoxopubu/zotimawipomumi.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/fajikupaxokanas.pdfIn PDF document text
    • https://s3.amazonaws.com/xamapebonijos/how_to_set_up_your_kindle_paperwhite.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000129b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129B8 5164 bytes
SHA-256: 50b7d49d64c1fb4b242d9b25fed5f72e786b48b6108db2a6eaaa067e0bad6007
font_01_sfnt_off00013b3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B3F 13280 bytes
SHA-256: 1a55d79f66ae283a467a6cd4e5c600173d72e61e7a8d2f591cc1f68bccf753b6
font_02_sfnt_off0001663c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1663C 16168 bytes
SHA-256: bcfecb9fde4b74e4a2b692e15caf305b2988a1cfe4c6386614002e38d35feb86

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