Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e237da5171889e8…

MALICIOUS

PDF

78.5 KB Created: 2021-03-06 14:51:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: e36d90c4b5919e91a139e0a77c7acce6 SHA-1: 75f4f7fb41d553bbc7b563e66da2daceeaf3dfe1 SHA-256: 6e237da5171889e8e3ec957ae29cd8dd300fec6bd1e3194c2d4b04b8bfa46a5a
126 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by heuristics as a potential link farm and flagged by ML classifiers as malicious. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'monsterverse future movies', suggesting a phishing or scam attempt. The presence of external URIs and the ML classification strongly indicate malicious intent, likely to redirect users to a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9915

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://xezojetit.ru/award?keyword=monsterverse+future+movies PDF link annotation
    • http://babusokojanog.sportsontheweb.net/how_to_draw_a_person_body_easy_step_by_step.pdfIn PDF document text
    • https://cdn.sqhk.co/vomuvojovi/icOgfic/delitefokel.pdfIn PDF document text
    • http://nunesop.scienceontheweb.net/why_does_my_honeywell_fan_keep_turning_off.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494657/normal_60238340bcc60.pdfIn PDF document text
    • https://cdn.sqhk.co/womalakifaxa/eZgciaD/creepy_sounds_mp3_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469847/normal_60322307cd274.pdfIn PDF document text
    • http://penageli.getenjoyment.net/87657509924.pdfIn PDF document text
    • https://cdn.sqhk.co/sinonari/iW6ijkI/fireboy_and_watergirl_online_2_level_18.pdfIn PDF document text
    • https://cdn.sqhk.co/naziwixolagu/yBjbejh/cvs_health_brand_baby_care_products.pdfIn PDF document text
    • http://jekefidaz.mygamesonline.org/gusoji.pdfIn PDF document text
    • http://wimokarekore.22web.org/fechas_de_incorporaciones_polica_nacional_2020_colombia.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477892/normal_6021a0480be52.pdfIn PDF document text
    • https://cdn.sqhk.co/kerosumumato/2ghWmO9/fewotilofoxijola.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377902/normal_5ffcab7a72577.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/mesotodimus/bedamunijesanek.pdfIn PDF document text
    • http://pewizofiwerobep.rf.gd/cara_buat_survey_guna_google_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8432dbb-2050-4be8-8158-cc1fa65dd862/leer_comics_tintin_online_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/bugutaj/corrugated_box_making_machine_project_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4a1955d-8238-4b58-8a9f-e7b4c1ddfdf3/82030784160.pdfIn PDF document text
    • http://gonuzalujulogab.rf.gd/bekhayali_mein_full_song_video.pdfIn PDF document text
    • http://kavibajegis.onlinewebshop.net/suzuki_intruder_vs800gl.pdfIn PDF document text
    • https://s3.amazonaws.com/xewamejixolefaj/circulatory_system_structure_and_function_answers.pdfIn PDF document text
    • http://defezanoluvu.rf.gd/tikedafaxadilutim.pdfIn PDF document text
    • http://bubexixan.epizy.com/43344394782.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0404a64-671d-4ec7-b17d-b7532c29f055/1782409918.pdfIn PDF document text
    • https://s3.amazonaws.com/luropi/all_about_me_questions_for_adults.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b37711c0-45b5-42ff-b4ce-1175224a2d12/38357264239.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxutedi/grocery_store_list_templates.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_off0000f72d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF72D 4736 bytes
SHA-256: 43aa3ebe9143e34aceb3216f1e53ddfdacc0938f8f2a45574f9071d971d69e51
font_01_sfnt_off00010746.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10746 10848 bytes
SHA-256: 53721a88708bdceda663c1755a823ddfbe3abf2bbe620e3cb225ac93e7108ca0