Malicious PDF — malware analysis report

Static analysis result for SHA-256 abf9c47828e24af7…

MALICIOUS

PDF

47.5 KB Created: 2020-10-25 09:12:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: dffae4237a238a2115fb28cf7665d2fe SHA-1: edae9f586fa5716003a2558419363a899a03311f SHA-256: abf9c47828e24af747170782789f0f10c4731f0fff48297d387b966bc8df7dc2
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.cc/aws?keyword=types+of+communication+devices+pdf In PDF document text
    • https://jaxuwigoba.weebly.com/uploads/1/3/4/2/134266140/4240666.pdfIn PDF document text
    • https://dujopoda.weebly.com/uploads/1/3/0/7/130739119/3038930.pdfIn PDF document text
    • https://vozexipazaxa.weebly.com/uploads/1/3/4/4/134444785/f108215c6821d4f.pdfIn PDF document text
    • https://natizupasa.weebly.com/uploads/1/3/1/4/131437725/d3912.pdfIn PDF document text
    • https://fisotewefupug.weebly.com/uploads/1/3/1/0/131071176/bifekapum.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389581/normal_5f95220be5947.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383565/normal_5f93377cca7d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368238/normal_5f88a4ada9609.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366337/normal_5f87d7db2b4bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379744/normal_5f8e28214cad1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366020/normal_5f8d0b69a222e.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/1/0497/5978/1023/files/2020_subaru_outback_3.6_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0457/6618/1028/files/24063143266.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1717/3152/files/16862216035.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/6958/5591/files/12422352339.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b815345-aa44-4e79-8244-ef39fc0ee579/wuvixu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42f3363b-bd28-4be9-a8af-8e45f5dac832/posewazimilopevufojunexo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f94dc5f-4ac8-4f54-ada2-1e6772fdd619/counterfeit_gods_tim_keller.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2ae8652-c500-44fa-8868-2242190cd07c/zokuxetejevivolido.pdfIn PDF document text
    • https://s3.amazonaws.com/rufonali/grade_1_math_addition_word_problems.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/24250712032.pdfIn PDF document text
    • https://s3.amazonaws.com/pisik/learn_russian_books_free.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/86346397062.pdfIn PDF document text
    • https://s3.amazonaws.com/fojaxexino/bitixiwuzel.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_off000079cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79CD 5284 bytes
SHA-256: 7a89d07c08890686831bc8578b7d522974af377915baa51503306377383ac770
font_01_sfnt_off00008bc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BC8 10156 bytes
SHA-256: 403e534af583ce0187b16729353f9f7fb3c04da2e2dd59b20015a9441131ebfd

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