Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba951365c046e261…

MALICIOUS

PDF

65.7 KB Created: 2020-10-20 00:09:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: dcb2fc94d0ddb36c34b0fe0e2f66541c SHA-1: e78119b1f8b5e6882e05e86489c76138901b3929 SHA-256: ba951365c046e2618a3fea17e85c4dae48cbb646e1ac5aef6614ee66f7f2d311
192 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/123?keyword=manual+shark+steam+cleaner In PDF document text
    • https://wefamojugibe.weebly.com/uploads/1/3/1/1/131164519/04ac323ba38.pdfIn PDF document text
    • https://kesevaze.weebly.com/uploads/1/3/1/3/131383297/7e12586af701d5.pdfIn PDF document text
    • https://vawotitalu.weebly.com/uploads/1/3/2/7/132710714/8211385.pdfIn PDF document text
    • https://dimejozetef.weebly.com/uploads/1/3/1/0/131070151/funegiwofoxog-jobegabudato-juledizasiximel.pdfIn PDF document text
    • https://rabexowubomisuw.weebly.com/uploads/1/3/1/4/131407155/c5d1de51e.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/zidebesirolabavo.pdfIn PDF document text
    • https://bilewazivabo.weebly.com/uploads/1/3/2/8/132816117/1886305.pdfIn PDF document text
    • https://tegugozitofo.weebly.com/uploads/1/3/0/8/130874592/6f488075198f91f.pdfIn PDF document text
    • https://kenilajapa.weebly.com/uploads/1/3/1/0/131069910/lojowuzesewat_tuxabikugu_wepapemefik_vizepibodu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380691/normal_5f8d4ad4f11f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369189/normal_5f8dff9b34680.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368740/normal_5f8c1b69eac26.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/03330ef4-6338-428b-8542-2811d914788a/389292102.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c84e25e1-1dfa-4dc9-8444-1cc6ac599fef/luvelo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a2a18b4-803c-4587-bea1-d398605f6210/wixagovo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f304393e-df4f-40cb-a6bc-30a057ee9686/71304080781.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e65c2fc-8dc5-4e23-a525-ee32ae2997b8/1778764952.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8109/6096/files/juzinixupinolezi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4760/7720/files/calories_long_john_silvers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/0649/9226/files/alcohol_consumption_guidelines_nz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/6120/5924/files/create_from_webpage_php.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/3336/5146/files/law_school_personal_statement_length_reddit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b40a368-aed3-443b-bb19-e51a1ccb11c7/ejercicios_de_signos_de_puntuacion.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/adc414ef-4095-4ae3-8d99-2c9aca182ba9/letumizujokagoduwugoter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5962e579-5bbe-4bdf-89d4-2aa59253812e/8972049494.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_off0000c560.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC560 5108 bytes
SHA-256: 9165142f165bebc6f9faa5e284c38e8d3dc1fbeaed24d34dabbaf8d6a42ea891
font_01_sfnt_off0000d68c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD68C 10084 bytes
SHA-256: 9f1c325410d4a86521c1f8cfc757ffaebd2e1b9b13dbf7b9cbb89d74893c32ec