Malicious PDF — malware analysis report

Static analysis result for SHA-256 96aeff2a22fabb91…

MALICIOUS

PDF

75.0 KB Created: 2021-03-21 08:06:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: e1c6d2fb9a21437587f67a32a587af2c SHA-1: b56ebd7d0a7952656bd1dc0ed9d38155d41dcc77 SHA-256: 96aeff2a22fabb9128865309a16e99b2536d513ec48c25d133f52eb04c9a2969
126 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. The document body, though heavily obfuscated, contains text related to 'making connections 3 teacher's manual pdf free download', suggesting a lure. Numerous external URIs were extracted, many pointing to disposable hosting and link farms, indicating a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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://pelibifir.ru/wix?keyword=making+connections+3+teacher%2527s+manual+pdf+free+download PDF link annotation
    • https://cdn.sqhk.co/xavipinav/jryyHA5/amphibians_facts_and_information.pdfIn PDF document text
    • https://cdn.sqhk.co/govizanorev/gjvhdje/hanuman_vs_mahiravana_full_movie_300mb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486565/normal_5fc7fc05d0fa3.pdfIn PDF document text
    • http://tublitalia.space/el_amor_en_los_tiempos_de_colera_pelicula_completa_online80gar.pdfIn PDF document text
    • http://ecoservice-vlad.ru/52802386167uexn6.pdfIn PDF document text
    • http://1gusevshop.space/jafanccmvs.pdfIn PDF document text
    • https://cdn.sqhk.co/difixoruze/AUjaihl/kiadb_bye_laws.pdfIn PDF document text
    • https://cdn.sqhk.co/jefapukawore/rNc4oie/68257511955.pdfIn PDF document text
    • http://wobijovo.22web.org/551534592.pdfIn PDF document text
    • https://cdn.sqhk.co/xidizizo/ahMpjch/virajoxo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408720/normal_60049e665e991.pdfIn PDF document text
    • https://cdn.sqhk.co/vozevadijut/jfghwhg/open_rc_tracks_near_me.pdfIn PDF document text
    • http://ergors.space/podutepakasulilekufelegixb6g4z.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486987/normal_5fc8a4b09f0b7.pdfIn PDF document text
    • https://cdn.sqhk.co/xojapafe/hghhdgj/whack_your_ex_poop_game.pdfIn PDF document text
    • https://cdn.sqhk.co/lojeliju/iiiFgji/download_game_avenger_legend_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/zetanitanedo/Vjibjiq/amazon_prime_video_customer_service_phone_number_usa.pdfIn PDF document text
    • http://kulokozataxat.22web.org/87364947421.pdfIn PDF document text
    • https://cdn.sqhk.co/sevijeruba/oMNEidK/uber_driver_salary_new_york_city.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/ginutu/73616863794.pdfIn PDF document text
    • https://s3.amazonaws.com/xenavuxa/amanita_muscaria_var._formosa.pdfIn PDF document text
    • https://s3.amazonaws.com/nitidadufetenu/manchester_united_fifa_18_career_mode_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/boxujetanonikuv/wavepad_full_version_crack_apk.pdfIn PDF document text
    • http://sovizaz.epizy.com/guidelines_for_colonoscopy_surveillance_2018.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_off0000dc0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC0D 5928 bytes
SHA-256: 0b41cc83ac7248fe7733fe26daaee29da3a4f75bc50cd000791b00aa9d781e33
font_01_sfnt_off0000f035.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF035 1800 bytes
SHA-256: daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e
font_02_sfnt_off0000f8c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8C3 10616 bytes
SHA-256: 6813fd37ae735294dd978a398dcd2fe9a820a6c575626f311f8cc3aa6f6d36cc

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