Malicious PDF — malware analysis report

Static analysis result for SHA-256 07da2d1830c2a2b7…

MALICIOUS

PDF

43.5 KB Created: 2020-10-29 08:41:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 4061ef270e110df73c4e04cf78d927e2 SHA-1: 8546ffbf39eee18f0e70daee863c7ac3e489f82a SHA-256: 07da2d1830c2a2b7da8c3ec119749cf02b3ac3c21b0f1c9fe74e95f92b096427
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=new+testament+study+guide+chuck+smith In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365619/normal_5f87026616959.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376372/normal_5f8b06f7e1e65.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371812/normal_5f95080b87edd.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006985.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006985.bin)
    • https://uploads.strikinglycdn.com/files/9fc8d21e-58be-44ec-9110-803025388502/diwamisekisileve.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25de93f8-3c81-4fbd-804f-5672808e584a/80543317903.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f649a4f2-a084-43d2-ae9d-63a0f4bf2535/54660747571.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c34e807-bb9f-4777-8db1-34ee21a6f369/44167812034.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/473d6989-30cc-44d7-b87e-e1d600e8e049/tournoi_poker_paris.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3b144cb-4966-4a4e-a166-08e9006c071b/3437665665.pdfIn PDF document text
    • https://s3.amazonaws.com/jafujasiwetid/fuzivopopeluwamawumere.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabisura/physical_and_chemical_properties_of_alkenes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8525981a-f652-4ad7-99f5-94665193b48e/tipos_de_datos_en_sql_server.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fce9c09c-12ae-42eb-8791-bc9a8fa5fac7/purinamoxomarudedak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/5291/9703/files/sugupegod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8927/4047/files/60935628744.pdfIn PDF document text
    • https://s3.amazonaws.com/mipeboro/vufimis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0b26407-9d3f-41de-938a-02743657bb89/44276615021.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/209788a1-b498-48e9-ae8d-3566c3e97b00/83073259284.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e42bb24-7d56-4851-a6c8-fbe0981207f6/free_robux_generator_no_survey_no_download_no_human_verification_no_password.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9440/4008/files/proform_2000_treadmill_assembly.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/89382488616.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3301/5958/files/kaleferizemogojitelof.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_off00006985.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006985.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6985 5452 bytes
SHA-256: 3ff64a5dd52be3d845f9e1fedcc7570596c576aeaa39d8487c728d53352808b0
font_01_sfnt_off00007c0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C0B 10988 bytes
SHA-256: bfbc347aaf43ddca6e1223c29b8ed9f3f79c248ae3b48137c1dc68a6cab0311c