Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b0b680ac81c015b…

MALICIOUS

PDF

48.7 KB Created: 2020-10-21 18:54:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: e1ff485ba72ba22aa5826ea594dc3fdd SHA-1: 621cb25b1f71b1fa6f3396e350215dd35a825f64 SHA-256: 0b0b680ac81c015b3b26c56190da0b382b03bdf835521e98adf472a8f72cd720
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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.link/123?keyword=tekken+3+original+game+download+apkpure In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365656/normal_5f8fb7f7679b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366017/normal_5f87082116924.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376126/normal_5f8b2c8a1c657.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366973/normal_5f8d16e45142a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392195/normal_5f8e891b487c4.pdfIn PDF document text
    • https://tovozilulu.weebly.com/uploads/1/3/0/8/130873983/pagetapulurozu.pdfIn PDF document text
    • https://tipefejiri.weebly.com/uploads/1/3/0/9/130969755/gerogewupag-fikupejoku-ratobolut.pdfIn PDF document text
    • https://jenafowumavadas.weebly.com/uploads/1/3/1/4/131437472/8465739.pdfIn PDF document text
    • https://boguvetasitob.weebly.com/uploads/1/3/1/3/131380850/8fd1abd906eb14e.pdfIn PDF document text
    • https://dejolezeg.weebly.com/uploads/1/3/2/8/132815968/sivewisuvoliget_jabibaner.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/wonoti/diccionario_griego_espaol_biblico.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/logic_gate_table.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/53526006748.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/718ee6c1-4731-437a-97c1-ead8f0318062/boxejipawevilu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/700413c8-448b-473b-95cd-d55c24ea1222/69569536140.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/354974d6-e50a-489a-9901-11c41e8de497/47787792854.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/liquor_price_in_kolkata_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/biblia_hebraica_stuttgartensia_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/0023/3635/files/strong_acid_definition_and_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/0752/7077/files/sujiniv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/8697/7441/files/rulemafige.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007109.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7109 5172 bytes
SHA-256: 0c252d8e6821b7e4d66d5e6083f09c3b9a7f32db93c854e9e43ef1c60499654d
font_01_sfnt_off00008290.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8290 10616 bytes
SHA-256: c2688837eb6ff19c1281e029934f977146e04b4731500f2d2dde739bf6fba4f7
font_02_sfnt_off0000a6da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6DA 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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