Malicious PDF — malware analysis report

Static analysis result for SHA-256 4459001c5b1a0795…

MALICIOUS

PDF

65.1 KB Created: 2020-10-31 01:56:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 54c20916c98393417196bff46ebd413d SHA-1: 325da267cacd99508784a0ff9020cbc9f8d2fc5a SHA-256: 4459001c5b1a0795970124a09744c23d472df8ffb708673ca14c626c8e2dadfc
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.link/123?keyword=digital+advertising+proposal+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4393883/normal_5f8fdd92038a9.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000bf1b.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000bf1b.bin)
    • https://cdn.shopify.com/s/files/1/0497/8930/4994/files/osrs_kudos_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65797c82-1b4b-4eee-ad5b-b9cf4d6b0dc1/zotasipafudategad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d74c4005-faf9-49bf-8924-82f634f09c7e/pusanowiguburi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78089b05-28e9-4e3f-ac70-deabf3342aa3/yankee_doodle_trumpet_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/4450/9111/files/tesikobisutepadu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c396cb7-8470-4e87-b881-db1dd1c6715b/types_of_buses_in_computers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/436b2480-d2a9-4045-b0a3-2d20a7a4f140/25409036809.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/9357/2807/files/pilot_fountain_pen_cartridge.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9f7b33d-9d35-49e5-91c5-14bf04b0fe43/gerewe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/5498/5127/files/free_fire_game_download_jio_phone_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d21ebee4-ee68-4371-84d4-cdbb020aa54c/lekara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5591/2862/files/irregular_plural_noun_worksheets_4th_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/50159743836.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/7259/2289/files/ocarina_of_time_forest_temple_guide.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_off0000bf1b.bin)

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bf1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF1B 5268 bytes
SHA-256: d322d25f857829a69f48b853feffc4e86b0f6c4e458cd2d5ec9481de01dc4ba0
font_01_sfnt_off0000d124.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD124 11208 bytes
SHA-256: e598d091459739c7b3b842410e83bbc675dac725e1d89a8dd6c88b2955eb0e83

Open this report in the interactive analyzer, or submit your own file for analysis.