Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2ed1b71f7eb34ca…

MALICIOUS

PDF

134.9 KB Created: 2021-03-14 02:43:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 2e675631fdebd7ad16691b34f4aba4d0 SHA-1: 6e208a8b4495be14124a0e3583669969ad7df761 SHA-256: e2ed1b71f7eb34caf5c39b784713ff8375e1f3c6265d0ebd46764dde0d56aad3
74 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. It uses an urgency-based lure. 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

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://ponafet.ru/123?utm_term=steam+link+android+app+review PDF link annotation
    • http://kazaxofenew.iblogger.org/official_boyfriend_application.pdfIn PDF document text
    • http://bomepufibawil.scienceontheweb.net/dark_souls_3_dex_faith_build_stats.pdfIn PDF document text
    • http://lidedapomegila.iblogger.org/maintenance_technician_job_description.pdfIn PDF document text
    • http://gejikojaki.scienceontheweb.net/23174294741.pdfIn PDF document text
    • http://mipesubukef.iblogger.org/19775700168.pdfIn PDF document text
    • http://rupiwot.getenjoyment.net/catalogue_schneider_2020.pdfIn PDF document text
    • http://rosoxul.iblogger.org/37270163763.pdfIn PDF document text
    • http://jisipajimeleja.22web.org/whirlpool_cabrio_top_load_washer_not_spinning.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://s3.amazonaws.com/zonebon/resumen_de_edipo_rey_por_captulos_yahoo.pdfIn PDF document text
    • http://zurogukewujot.epizy.com/audiolibro_el_poder_del_pensamiento_positivo_parte_2.pdfIn PDF document text
    • http://vipenugixegun.epizy.com/zebujowex.pdfIn PDF document text
    • https://s3.amazonaws.com/vinivuxo/tebusixutiziwosab.pdfIn PDF document text
    • http://xuvotawelotito.epizy.com/tagalog_praise_and_worship_songs_with_lyrics_and_guitar_chords.pdfIn PDF document text
    • https://cad90261-f038-4e8a-b384-2e0e37e6cb8c.filesusr.com/ugd/4c4e45_2668cbc3f49b4d0dae86258a5e44e58a.pdf?index=trueIn PDF document text
    • https://933527c5-e005-4225-a3aa-05fee46c7696.filesusr.com/ugd/b51dd5_88ac561a1ecb47cca84dc0cce913f854.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wuxupewu/data_structures_and_algorithms_tutorialspoint.pdfIn PDF document text
    • https://s3.amazonaws.com/dotivaf/210207926.pdfIn PDF document text
    • http://sivokag.epizy.com/adharam_movie_songs.pdfIn PDF document text
    • http://pefemopu.epizy.com/hp_officejet_7110_not_working.pdfIn PDF document text
    • https://23751d96-d7b3-42ca-b8ca-e459b671ea95.filesusr.com/ugd/7de994_77153c46e66a4627acdfc07d610a6197.pdf?index=trueIn PDF document text
    • http://vemesivudaro.epizy.com/vojoxu.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_off0001c857.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C857 5032 bytes
SHA-256: 5593183ed57a799a697ef503ec96ac3eb44090c36d5681a582b6d27c002263e4
font_01_sfnt_off0001d961.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D961 11440 bytes
SHA-256: a052838ec1a810550fa0fce96fced182b30dbd0c3b802e6cecc59d3f2e7e82ac
font_02_sfnt_off0001ffcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FFCC 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2