Malicious PDF — malware analysis report

Static analysis result for SHA-256 79de216018da1dac…

MALICIOUS

PDF

40.7 KB Created: 2020-10-03 18:40:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 6da52ccdae78e76deee7751817e0dd26 SHA-1: ac2bf142fed86ac26edbe50344ec7e788aa34fa7 SHA-256: 79de216018da1dac128bf3cff6a481c7dfbb0fb2e4fbe46089925ad8cf309d46
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.club/pify?keyword=digital+imaging+specialist In PDF document text
    • https://site-1040503.mozfiles.com/files/1040503/85837864733.pdfIn PDF document text
    • https://site-1036744.mozfiles.com/files/1036744/38057706660.pdfIn PDF document text
    • https://site-1038489.mozfiles.com/files/1038489/59118082861.pdfIn PDF document text
    • https://site-1040506.mozfiles.com/files/1040506/65936402388.pdfIn PDF document text
    • https://site-1036627.mozfiles.com/files/1036627/balanezalorizufimud.pdfIn PDF document text
    • http://xigunazad.cfbctoday.org/uploads/1/3/1/4/131483418/gopuxumunirozosum.pdfIn PDF document text
    • http://files.carriereiling.com/uploads/1/3/0/9/130969354/a46aca.pdfIn PDF document text
    • http://zipugibum.alazhartemple195.org/uploads/1/3/0/7/130739706/575ad754c.pdfIn PDF document text
    • http://bexonipe.traventuring.co.uk/uploads/1/3/1/4/131452883/2468145.pdfIn PDF document text
    • http://roxifixom.technologyallianceontario.com/uploads/1/3/1/3/131381886/234003.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/1/0461/0877/0467/files/topizogenodamaxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8583/9003/files/brea_mall_directory_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4053/6736/files/vocabulary_workshop_level_c_unit_10_answers_choosing_the_right_word.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd29259a-b7fc-4645-abec-e733288dffc2/vonuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae69afa5-915c-45a9-8598-aeb08e594c05/silesarukabizisitozu.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_off000061c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61C0 5156 bytes
SHA-256: e0c8bb3ec16124a32ccf07a6a2bf10fa6caa9df81a031f0e21cd26ecaf6a8e0d
font_01_sfnt_off0000734b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x734B 10180 bytes
SHA-256: 06290afb0318eeaa4970a3f5f87d2124aa440864d188c2e113fe95d006e93f01

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