Malicious PDF — malware analysis report

Static analysis result for SHA-256 73854077036650c7…

MALICIOUS

PDF

44.4 KB Created: 2020-10-26 10:23:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 80f8a6912cf52141a97516db993af1cf SHA-1: d6e21d9c801385f6bc1e2b416bef2fa40a65c296 SHA-256: 73854077036650c7e28ded9eb05271122779d7da526a5d9209a655b4f30d6c3a
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://ggtraff.ru/aws?keyword=paris+bus+map+with+streets+pdf In PDF document text
    • https://xesaranit.weebly.com/uploads/1/3/2/6/132696194/4948420.pdfIn PDF document text
    • https://dudikojegak.weebly.com/uploads/1/3/1/4/131406444/77694823b2d8e.pdfIn PDF document text
    • https://mogezisatizate.weebly.com/uploads/1/3/0/7/130775403/a4293.pdfIn PDF document text
    • https://naxizugopigonav.weebly.com/uploads/1/3/1/4/131408516/lomowefufukez.pdfIn PDF document text
    • https://pigogokeda.weebly.com/uploads/1/3/1/8/131857695/somulimezopomab-nolapuxoduvamak.pdfIn PDF document text
    • https://tovozilulu.weebly.com/uploads/1/3/0/8/130873983/neluxerodixenawesun.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369318/normal_5f8b93cc3edca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375518/normal_5f937c8d2e147.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/4664f898-e23d-4d6f-b27b-62fbee5ddcca/22029528847.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7f0be24-cfc0-4f5e-9915-898eaf9e2a93/97629909503.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc5af117-15dd-4a0e-806b-748b8a6283d2/bovasudofat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ed1696c-9412-4e95-bea0-139af86e78e0/dinasuxofekovefigus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/983711ea-3963-448d-ad0e-279d732f630b/kibivipokopoba.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/billing_system_project_in_java.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/35029881237.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/4000_watts_power_amplifier_circuit_diagram.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/votoxunamoroxa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b82211ee-48d1-4216-8b28-7cb31230626e/72073732898.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7d531a4-fe12-4f44-8f36-3aa5bd174b5f/illinois_notary_forms.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fb8885c-a85d-41b6-81b4-f39a37181cf1/40833025272.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/823a3157-eb87-406f-95db-e9aee042b447/charlie_zaa_sentimientos_you_tube.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_off00006f5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F5E 5484 bytes
SHA-256: e5ba419254950bc0e9bb191e5ff81caa980a894b136d44b92ff22afb5a052887
font_01_sfnt_off000081ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81ED 9948 bytes
SHA-256: a52982e2c0f5871eedea87b8b1793f112db06466ddb88781a0d09f9a54994e79

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