Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c45c5dcb57fcfd1…

MALICIOUS

PDF

53.8 KB Created: 2020-10-17 04:00:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 5875e53f97a0d9496b9e820055099f58 SHA-1: f9d68237cf8b9d0c857b543d2d57e85beebbfa70 SHA-256: 1c45c5dcb57fcfd1b4beed8da711a8e37ce5e4ecd32b82440c7e9194716cfba8
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.me/123?keyword=android+studio+find+jdk+location In PDF document text
    • https://sisaseno.weebly.com/uploads/1/3/0/7/130776680/jawuzo.pdfIn PDF document text
    • https://jamuseramomuf.weebly.com/uploads/1/3/1/8/131871426/rumivijimipid.pdfIn PDF document text
    • https://vonubaxuted.weebly.com/uploads/1/3/1/4/131452839/0dbf8bf3a319.pdfIn PDF document text
    • https://kelobutino.weebly.com/uploads/1/3/0/9/130969458/46b3b9839f779.pdfIn PDF document text
    • https://pigogokeda.weebly.com/uploads/1/3/1/8/131857695/2c5e263e815.pdfIn PDF document text
    • https://mugekezozo.weebly.com/uploads/1/3/1/6/131636766/2453243.pdfIn PDF document text
    • https://zeginuvo.weebly.com/uploads/1/3/0/7/130775519/7c6269aba0239.pdfIn PDF document text
    • https://zuparimetusu.weebly.com/uploads/1/3/1/3/131378993/pewonisoja.pdfIn PDF document text
    • https://jelamiwigu.weebly.com/uploads/1/3/1/3/131382248/satavot-purevi-gojakiz-lusopug.pdfIn PDF document text
    • https://wepugimi.weebly.com/uploads/1/3/1/0/131070973/912726.pdfIn PDF document text
    • https://fupexorugukemig.weebly.com/uploads/1/3/0/8/130814763/25ed1ebb961c.pdfIn PDF document text
    • https://funiwulew.weebly.com/uploads/1/3/2/8/132814073/b3baea2c1905e.pdfIn PDF document text
    • https://folanejo.weebly.com/uploads/1/3/0/7/130776558/figabesesamanuxip.pdfIn PDF document text
    • https://lajojixuvoporor.weebly.com/uploads/1/3/0/7/130738555/c15770bed.pdfIn PDF document text
    • https://debasomi.weebly.com/uploads/1/3/0/7/130739769/18b3dc9062.pdfIn PDF document text
    • https://wojeribexojuxu.weebly.com/uploads/1/3/1/8/131856158/1bc05797cff2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/49670f3e-cc9f-4f33-a665-466f0bab7936/gojutozuwoposapolosawiwod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9ce55eb-ac2d-490a-bcb8-61b0dd4c72bf/ruwezapoturosowewamuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4aa161b-3671-4e27-823f-699b67779744/90216429227.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b041c271-15b6-4150-a3fb-3020b17e18af/49586444567.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/343dcaca-8e78-4b98-960c-08d66c50b6c9/neriz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fc24bf2-1a25-471e-8ab4-1984e79bf125/fumakutogogebinezunoxu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa17f05b-f4e9-4579-81d8-dfee3a5b5fa5/bukaxamesapeb.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_off000090f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90F3 5144 bytes
SHA-256: c8768044db8a78c8fd2e393ee85240ecc81c1a9b28d3416d43fe1ac2cfca3a4d
font_01_sfnt_off0000a282.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA282 11928 bytes
SHA-256: 108735ed739de27a26d02359364852640d1b9661359e79c7d6ce8d909228719f