Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd559c056fef7b4c…

MALICIOUS

PDF

38.1 KB Created: 2020-10-29 08:55:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 342ff7f519640f3a7f9b81de5f0ddff1 SHA-1: 05202f48bdb546224027d601ba53d6569da9b63f SHA-256: bd559c056fef7b4ca4d163c76c531cc6cdb5db7ff29e6d9308221a686853b0c3
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://ttraff.me/123?keyword=nintendo+3ds+xl+stylus+uk In PDF document text
    • https://jubunukaf.weebly.com/uploads/1/3/1/4/131483214/pusota.pdfIn PDF document text
    • https://zigegawemofeza.weebly.com/uploads/1/3/1/4/131406932/fopezizu.pdfIn PDF document text
    • https://lujadogube.weebly.com/uploads/1/3/4/5/134522393/tujusav-jazenatij-bolag.pdfIn PDF document text
    • https://gewosawoma.weebly.com/uploads/1/3/0/7/130739201/1755068.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00004c5a.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00004c5a.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off00007d53.bin)
    • https://cdn.shopify.com/s/files/1/0497/3628/6359/files/sowavemirasopa.pdfIn PDF document text
    • https://s3.amazonaws.com/nopomewegobij/zuteviweni.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d4e84d7-9f2f-46bd-bc1f-894ee80ce252/hacker_para_heromice_server_1.pdfIn PDF document text
    • https://s3.amazonaws.com/gosete/all_about_gst_in_hindi_download.pdfIn PDF document text
    • https://s3.amazonaws.com/fodose/88629507911.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/clerk_of_works_and_site_inspector_handbook.pdfIn PDF document text
    • https://s3.amazonaws.com/gaxuremewuger/prime_factorization_of_70_using_exponents.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/2199/2599/files/dtc_-_bville_consumer_direct.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9690/8970/files/cricket_darts_rules.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25761c63-9e85-42fd-b776-06ba0a7f1f8f/jivota.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/5895/2872/files/solar_powered_fan.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/xelilas.pdfIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/ruxudanuke.pdfIn PDF document text
    • https://s3.amazonaws.com/pegek/nebraska_football_uniforms.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/63442114184.pdfIn PDF document text
    • https://s3.amazonaws.com/lekizopiloref/our_lady_of_divine_providence_milwaukee.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/8697/7441/files/definicion_de_derecho_internacional_publico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/2241/8839/files/19474346434.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 extracted file (font_00_sfnt_off00004c5a.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004c5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C5A 4764 bytes
SHA-256: ba90a6c3bbda6549436c2c7662a023edeec18c7defd44d1f2feff05e8d6fa1a8
font_01_sfnt_off00005cae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CAE 9572 bytes
SHA-256: 9da2d1b643da37a6030fee33a8832cbecf2d5cf2b34fdc75f3995fa8cb809480
font_02_sfnt_off00007d53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D53 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2