Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf7f6f2d18871d85…

MALICIOUS

PDF

77.9 KB Created: 2021-03-16 09:59:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 19fb51e78df7d7021cd435bac260df5d SHA-1: 55bd53dd2c30b70bedca30d017fe2f37b28b5477 SHA-256: bf7f6f2d18871d8569a000f88930ef3bfcbc6b051af6410d5d0a842166616656
66 Risk Score

Malware Insights

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

The PDF file contains embedded URLs that redirect to a domain associated with malicious activity. The ML classifier strongly indicates maliciousness, and the document body, though heavily obfuscated, contains text related to financial queries, suggesting a lure. The presence of multiple external URIs and a link farm heuristic further supports a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • 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://xezojetit.ru/strik?utm_term=what+is+the+max+fed+oasdi%252Fee+for+2019 PDF link annotation
    • http://daposojur.iblogger.org/gojepaxobapiximoki.pdfIn PDF document text
    • http://shop50off.info/medidas_de_prevencion_del_covid_19_en_los_centros_de_trabajouxsfd.pdfIn PDF document text
    • http://pepipejevu.iblogger.org/avett_brothers_morning_song_lyrics.pdfIn PDF document text
    • http://kinikapiv.22web.org/80456587359.pdfIn PDF document text
    • https://duzopotubesafes.weebly.com/uploads/1/3/4/8/134890215/7528793.pdfIn PDF document text
    • http://dvigatel.guru/notojimotemeivsyh.pdfIn PDF document text
    • http://laxetatisitu.iblogger.org/ikea_metal_platform_bed_frame.pdfIn PDF document text
    • http://tokigarodam.22web.org/zigivesogejenoluwabu.pdfIn PDF document text
    • https://matomuzunoto.weebly.com/uploads/1/3/5/3/135389802/daxanolum-wiguwotozujo-lovakugow-voveda.pdfIn PDF document text
    • http://venira.su/67199857493qqr47.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gavenivifi.rf.gd/soundcloud_files_online_free.pdfIn PDF document text
    • http://pilulozames.epizy.com/rifokosuwanolisunip.pdfIn PDF document text
    • http://buwijakuwomem.rf.gd/panel_discussion_method_of_teaching.pdfIn PDF document text
    • http://jevesukobiji.epizy.com/achievement_motivation_theory.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e7c688f-31ca-41ce-969c-8382676caecf/winawujiwatejo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5a802cd-4745-4267-ba72-1c79c7cb1637/what_is_the_best_definition_of_cooperative_federalism.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47e13c8d-9489-431f-a3dd-f2474c17c72c/jilojidemojodasuzojuve.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5335d5e8-6273-4f08-bb86-96daadeee9bd/xobugamojuv.pdfIn PDF document text
    • http://nenunosulijud.rf.gd/nulegenaz.pdfIn PDF document text
    • http://movebuze.epizy.com/34573882951.pdfIn PDF document text
    • http://taranijiburojod.rf.gd/the_man_in_the_high_castle_season_1_episode_5_recap.pdfIn PDF document text
    • http://kikodufe.rf.gd/2005_dodge_grand_caravan_3.3_oil_capacity.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70580162-c586-4352-84a5-d437676b7c91/wanutuveke.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_off0000f0d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0D8 5712 bytes
SHA-256: 37d0abd8e72e986bc6534d58e126faed38711e9f8664d4739dc8a789a66d5066
font_01_sfnt_off00010434.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10434 11088 bytes
SHA-256: 30984d7564c4658df97a034a432e5df2922dbfc0412b5fde48bda25b570a73bd

Open this report in the interactive analyzer, or submit your own file for analysis.