Malicious PDF — malware analysis report

Static analysis result for SHA-256 6efeffbea851d60e…

MALICIOUS

PDF

41.6 KB Created: 2020-10-04 14:15:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: e15de2516ebe3ad1cab8902946de7066 SHA-1: b44e6bfc80eb3738d891a0eefcf3eabc11370010 SHA-256: 6efeffbea851d60e1ddd838a30c27b94ce577c3dd07e52c3529a3c599e58a2b9
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://gettraff.ru/strik?keyword=how+to+use+sectors+stellaris In PDF document text
    • https://site-1043120.mozfiles.com/files/1043120/burumurogotasimigonusasod.pdfIn PDF document text
    • https://site-1040683.mozfiles.com/files/1040683/kujitapitifo.pdfIn PDF document text
    • https://site-1042360.mozfiles.com/files/1042360/mewupo.pdfIn PDF document text
    • https://site-1040248.mozfiles.com/files/1040248/21182838954.pdfIn PDF document text
    • http://files.riseandslimeco.com/uploads/1/3/2/6/132681632/59d30adc070031.pdfIn PDF document text
    • http://fowebowa.ebcpaulding.com/uploads/1/3/2/6/132682859/18af39fa84d9.pdfIn PDF document text
    • http://files.hycregatta.org/uploads/1/3/1/4/131438642/kusilesokufi-poxos-xasifezepujeden-jiwad.pdfIn PDF document text
    • http://javifavo.hardloxjewishfestival.org/uploads/1/3/1/4/131407014/3044c323679a.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/1/0485/2200/2587/files/tikijurawozofenegela.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/3755/8437/files/bitijibepemobatuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/8158/0953/files/xuduzupudetepagubut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0679/5686/files/10289092879.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/6813/1990/files/multiple_a_doll_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e877d3df-117f-4ed1-b4a9-d4fa0c8aac05/1626167993.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb062ca4-f2bd-454c-9a72-03572f014763/funulawepusezewuvoniji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b764d3c3-05e5-4170-90dd-6bcc10c91549/pikotogonave.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_off0000629c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x629C 4848 bytes
SHA-256: 4eb891dcb0c4ae1cd133859dd1d7aed6c4c8183a6db053ed603785bc16934e96
font_01_sfnt_off00007334.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7334 11780 bytes
SHA-256: a1ff5ef039528a3285cfa7a63ddfe3d62d47a2aa26f9ec02ab937af82c238812

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