Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fc6917e3faf6e5b…

MALICIOUS

PDF

39.9 KB Created: 2020-11-08 02:47:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: c007998115efd593c86720c77903911b SHA-1: bffd29747898f1144dae11cda34ec1b7cb1473c4 SHA-256: 5fc6917e3faf6e5be60d1c81ad7deb4b00b0918cb26e2e965f06ebc6c46451f1
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffmen.ru/aws?keyword=anatomy+of+the+constitution+answer+key In PDF document text
    • https://tinulesuse.weebly.com/uploads/1/3/4/6/134689832/878dd72b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469135/normal_5fa719af436e5.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/roruj-fegedevovelere-zexomojikazi-rewubujelem.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://juvibix.files.wordpress.com/2020/11/gabizagamumarokidatanum.pdfIn PDF document text
    • https://s3.amazonaws.com/saxefi/toxutepepeselelarimudukop.pdfIn PDF document text
    • https://s3.amazonaws.com/jikopot/importance_of_ethics_morals_and_values_in_education.pdfIn PDF document text
    • https://jizobote.files.wordpress.com/2020/11/royal_canadian_air_force_exercise_plans_for_physical_fitness_1962.pdfIn PDF document text
    • https://s3.amazonaws.com/gowebabuxogiro/applications_of_trigonometry_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/pisedij/john_wick_3_full_movie_reddit_stream.pdfIn PDF document text
    • https://vexuxab.files.wordpress.com/2020/11/zoosk_free_download_for_android.pdfIn PDF document text
    • https://gemaxabireme.files.wordpress.com/2020/11/dnd_5e_guide_paladin.pdfIn PDF document text
    • https://vabavoresadi.files.wordpress.com/2020/11/debewasomogoro.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_off00004edd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4EDD 5216 bytes
SHA-256: a705b55505433ffe7e718fbefe9442266f14b186e3b141e67b53b759ea72b7a3
font_01_sfnt_off0000607e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x607E 10508 bytes
SHA-256: 226b59cb380e7f799828a108e04d752d0815b4f307bb01abd7b88dc3df9ba5c4
font_02_sfnt_off00008436.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8436 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c