Malicious PDF — malware analysis report

Static analysis result for SHA-256 77e3436ba7796176…

MALICIOUS

PDF

42.6 KB Created: 2020-11-05 07:10:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 3facf38b229e81273b59b66a0c388242 SHA-1: 5b9fdef82466a4020a137762c5100dda6a7b8852 SHA-256: 77e3436ba779617673612b9090d09d756fb9cd5e7d061769cf686ab6e77eb56a
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://ttraff.me/123?keyword=what+is+the+benefit+of+worshipping+god In PDF document text
    • https://bovitala.weebly.com/uploads/1/3/4/4/134497817/124138a886e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382953/normal_5f9283ab189ef.pdfIn PDF document text
    • https://sazejorewisiboj.weebly.com/uploads/1/3/4/4/134459615/gexob.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381091/normal_5fa3264839e46.pdfIn PDF document text
    • https://vorujefam.weebly.com/uploads/1/3/4/3/134322124/tobarisobidapiwimaza.pdfIn PDF document text
    • https://durezeneb.weebly.com/uploads/1/3/4/2/134235042/998544.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368223/normal_5f8c7a577db78.pdfIn PDF document text
    • https://xesaranit.weebly.com/uploads/1/3/2/6/132696194/4091873.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406455/normal_5f9ffe2c85fb2.pdfIn PDF document text
    • https://wumevevevusawu.weebly.com/uploads/1/3/4/3/134388399/bewazejuwopeba_paxigalapivek_kowozosaki.pdfIn PDF document text
    • https://togimapobeno.weebly.com/uploads/1/3/4/6/134649298/gajokemuvuwegi_sifadoxageju_zafevumefasi_teruti.pdfIn PDF document text
    • https://jopalezaleloloj.weebly.com/uploads/1/3/1/3/131380469/fumizewetuxalax_muwuxofobamaba.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/paxivogedewilu/fhwa_traffic_monitoring_guide_2016.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/84207410091.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_off0000687e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x687E 5516 bytes
SHA-256: 0a1575fc308b7a125d808163fcf6b47e2150b6652778fe68e3437233975967d1
font_01_sfnt_off00007b48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B48 10052 bytes
SHA-256: 0c42891c686e90041f1972d11e62d2a845b38970d20b0ed9b401be630680e04d