Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c88da6c3510eb7f…

MALICIOUS

PDF

39.8 KB Created: 2020-11-07 07:44:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15
MD5: 44401563eddbf036fad9dcbb1a0a54bd SHA-1: 96cd0f28af846928811496699ee3a8a0b4b2e082 SHA-256: 3c88da6c3510eb7f65f88b4d131b99b113ef032a5a29f073a75e189e7f146647
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://traffset.ru/aws?keyword=the+trenches+worksheet+answers PDF link annotation
    • https://suganolorifumu.weebly.com/uploads/1/3/0/8/130814011/mizikix_bisatezi_nepinek_bebixakewos.pdfIn PDF document text
    • https://jagamasukibo.weebly.com/uploads/1/3/4/4/134493784/nivesejisifepagib.pdfIn PDF document text
    • https://dasateju.weebly.com/uploads/1/3/4/5/134582383/4817222.pdfIn PDF document text
    • https://gokisixoxi.weebly.com/uploads/1/3/4/1/134108612/d13d9ba3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://guzurelezusa.files.wordpress.com/2020/11/world_history_shorts_1_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/jonora/amate_bark_painting_birds.pdfIn PDF document text
    • https://nanekezutela.files.wordpress.com/2020/11/22790821624.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/dbz_goku_vs_vegeta.pdfIn PDF document text
    • https://s3.amazonaws.com/nuvukivaxiren/francine_rivers_books_mark_of_the_lion_series.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/ashirvad_cpvc_pipes_price_list.pdfIn PDF document text
    • https://s3.amazonaws.com/gaxuremewuger/prime_factorization_of_70_using_exponents.pdfIn PDF document text
    • https://s3.amazonaws.com/tiduro/carma_sutro_for_cars.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf9da390-026a-46ac-9327-e9f4bdfbd927/62690321815.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/519f07a3-d2f1-4095-aa77-de95a764a5e9/intermatic_malibu_ml600tw.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_off00005dea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DEA 4960 bytes
SHA-256: 59400accad3919b6fdd307da1f83e47ee3661fe3c95be9b93ec19174768eeb29
font_01_sfnt_off00006ed5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ED5 10612 bytes
SHA-256: a5fff1206144a5d1a5b94b68aa4143a004cfc0cf10d8dd873d37972f52e7df68