Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cc26617af5ce3c7…

MALICIOUS

PDF

44.8 KB Created: 2020-10-28 17:24:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 90258bee761cfa9cf948118053af19f6 SHA-1: 5ff3e328ad2175d7fd82f821484a22149f051f63 SHA-256: 2cc26617af5ce3c77a2e43559366b12dee1877a327637c15c94d18544be0e998
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=www.gmail.com+create+email+account+sign+in In PDF document text
    • https://fiwuvoreguno.weebly.com/uploads/1/3/4/0/134000104/xexizexamo.pdfIn PDF document text
    • https://bubiwodepu.weebly.com/uploads/1/3/2/8/132815961/6332635.pdfIn PDF document text
    • https://gejatovuri.weebly.com/uploads/1/3/1/4/131406669/nanorotulexinino.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006e23.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006e23.bin)
    • https://uploads.strikinglycdn.com/files/d2c30dfc-688d-4b15-9274-21eefefbaadd/what_does_a_coroner_do_when_someone_dies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4729/5898/files/dx10_scenery_fixer_review.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/6061/3286/files/namogi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/049b1ff9-120e-4cc1-87a4-b32b1bf57f1e/74504061629.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/bitwise_operators_in_c_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/4155/3082/files/tesatereroxuval.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0508/2870/5957/files/nadanera.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8482/5247/files/misuzodamobakopokab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/7992/0537/files/tagenadeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/1819/0489/files/fozujidadur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1879a04-f59e-451c-9f8c-0a17346f4388/zatobekiwewotorame.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e54abacb-36ce-4889-920a-d079cd28475a/walter_russell_books.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ddd0f9c-9bc1-4206-b66f-59f1405267ec/65020619889.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1355/1774/files/xigibinowubawe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36a06ae4-2f7c-4881-a821-40dd574d6ac1/1996_dodge_ram_1500_owners_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/663797b6-d76e-4397-b917-bbc7924caf7f/zikerafuzaroxusibunugetu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21479898-e901-4943-8ce6-04a07f4c469d/32658574515.pdfIn PDF document text
    • https://s3.amazonaws.com/sabobenuwe/sizirirufajofarusumofigij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/8650/1806/files/short_summary_of_animal_farm.pdfIn PDF document text
    • https://s3.amazonaws.com/bewibiwat/aristotelian_concept_of_tragic_hero.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef932c9c-085c-4229-a894-a4a59b73b1d0/tupaluvag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac4e7e06-228e-476c-98fc-cd55c38086b3/download_softi_scan_to_full_crack.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_off00006e23.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E23 5256 bytes
SHA-256: 500d4f4a5488eaa1342fa3c499f574926af686a4fce9299bdc61bc45c7073bfd
font_01_sfnt_off0000800d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x800D 10904 bytes
SHA-256: 330e8dc5b5e33d4d2bcd762fcb07df3bd9db7f7a0d7cce9f468914d2464f5197