Malicious PDF — malware analysis report

Static analysis result for SHA-256 b02a7c75aa85973d…

MALICIOUS

PDF

48.0 KB Created: 2020-11-09 06:04:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 4532d4d10c93586838cda6ffde1661c9 SHA-1: cb2c201f271dd7812ddf3eafa75bd98a369f4226 SHA-256: b02a7c75aa85973de958e652d8fe40b9da3591a960c8838b73b6a54a7860716d
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffi.ru/aws?keyword=world+religions+judaism+study+guide PDF link annotation
    • https://zevejekigo.weebly.com/uploads/1/3/4/3/134374512/vosejidiguneperu.pdfIn PDF document text
    • https://kodivowu.weebly.com/uploads/1/3/4/3/134360374/1542.pdfIn PDF document text
    • https://defugelunek.weebly.com/uploads/1/3/4/5/134524545/xanekinimijezaza.pdfIn PDF document text
    • https://ligekikisi.weebly.com/uploads/1/3/4/4/134492932/migukaduz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443574/normal_5fa26cd2e96ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385012/normal_5fa26254e4b51.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453336/normal_5fa3ad5fa13f6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://redasiwum.files.wordpress.com/2020/11/paper_house_templates_to_print.pdfIn PDF document text
    • https://lulagapo.files.wordpress.com/2020/11/68624631580.pdfIn PDF document text
    • https://diwelozizof.files.wordpress.com/2020/11/battlefront_2_mouse_stuck_in_middle.pdfIn PDF document text
    • https://bamadebib.files.wordpress.com/2020/11/2018_audi_q5_owners_manual_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd9d6c75-cba2-4f16-a130-10cb6fc4e2da/fepamuditemiravajetado.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_off00007c4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C4A 5336 bytes
SHA-256: 63323a8ede492a2738095fd839eba152cd11510061e82cb8097e1e9ea92ac852
font_01_sfnt_off00008e6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E6E 10716 bytes
SHA-256: aa70c3ad5540d4ea452ef446284ac5b350dbd1ec9c436d7241e760a89f176809

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