Malicious PDF — malware analysis report

Static analysis result for SHA-256 b406eb6d2c7c08c8…

MALICIOUS

PDF

46.8 KB Created: 2020-10-17 18:40:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 3dd77c96b97c034247aab0af0e28de93 SHA-1: 522a163bda8232efd8f91457f5732050227f8fa7 SHA-256: b406eb6d2c7c08c8fe25c46c674c559eb3002b1a7e8b234b72086e438f0297bf
184 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.
  • 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.
  • 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=government+suggested+dietary+guidelines In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366400/normal_5f8a0982a3524.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370767/normal_5f89b10ab0d55.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369158/normal_5f885a80c618e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369769/normal_5f8a9001479fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375690/normal_5f89a5f62a41d.pdfIn PDF document text
    • https://zinikedefi.weebly.com/uploads/1/3/0/7/130740178/3654805.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/27f578668f05.pdfIn PDF document text
    • https://xoraxabaxid.weebly.com/uploads/1/3/2/6/132682630/8d79aa44adaead3.pdfIn PDF document text
    • https://tejigenunonim.weebly.com/uploads/1/3/0/8/130813632/6812471.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/9051060.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/8925184.pdfIn PDF document text
    • https://pasuliwipo.weebly.com/uploads/1/3/1/4/131452824/7696b1fa88.pdfIn PDF document text
    • https://kuvofexe.weebly.com/uploads/1/3/1/1/131163751/tujoxakogafuxijoduw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374689/normal_5f8a91a27742e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370264/normal_5f890c3f7ae2d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367668/normal_5f89950f91c33.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366033/normal_5f8777bc71790.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367633/normal_5f8a3daa85492.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/0136/0806/files/niwuzexasi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/5857/5540/files/ra_one_game_apkpure_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9233/9614/files/best_reading_apps_for_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6522/1028/files/sozamarodopavuxamujapura.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26623090-6ffe-485e-aa0c-3ee7ec5dabe9/assembly_komutlar_ve_anlamlar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98fd40f3-b9e9-4a38-978b-6ce0746c2294/67349862025.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37140c27-b429-43f3-8e00-494f2380b6a7/ranorerenoke.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7728211-e5a3-44f7-b3c6-6423e035170e/winebi.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_off00007963.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7963 5336 bytes
SHA-256: 1bbe79045722f3e836162dd38a03fac9568cd2de898a6601b20e82bb76beb4a0
font_01_sfnt_off00008b82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B82 9856 bytes
SHA-256: 12a2f13bad19f7c15634d7a14c549c9dbcc61b196f2c818ae37f4afdc008e1eb