Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa8894f91baff19a…

MALICIOUS

PDF

38.2 KB Created: 2020-10-09 01:10:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ce6a22e5cd37c172d75374dcdd90f409 SHA-1: efe004ed77bc81fa7a69419eeb75f9cbf0c78408 SHA-256: fa8894f91baff19a7dbe6d061545713638f9147cfcf0e0a347680d51ad701d7a
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.link/pify?keyword=hot+wheels+slot+car+track+set+problems In PDF document text
    • https://site-1039641.mozfiles.com/files/1039641/45190196932.pdfIn PDF document text
    • https://site-1037054.mozfiles.com/files/1037054/32950452886.pdfIn PDF document text
    • https://site-1039802.mozfiles.com/files/1039802/gizebojuvik.pdfIn PDF document text
    • https://site-1036735.mozfiles.com/files/1036735/48536767247.pdfIn PDF document text
    • http://gitujul.edinburghlets.org/uploads/1/3/1/6/131606457/4a235.pdfIn PDF document text
    • http://files.docuprodrawings.com/uploads/1/3/1/3/131380504/besebu.pdfIn PDF document text
    • http://rebikasez.baieslings.com/uploads/1/3/2/3/132302842/a6a58cc.pdfIn PDF document text
    • http://files.lulingicehousepottery.com/uploads/1/3/0/7/130740069/dabevafovitagufob.pdfIn PDF document text
    • http://files.thearconline.org/uploads/1/3/1/3/131380901/33eb553dd2d.pdfIn PDF document text
    • http://files.azpattersonedu.com/uploads/1/3/1/4/131407370/xiwakafumek-vorekozusegi.pdfIn PDF document text
    • http://vobopefex.hilltaxisweymouth.net/uploads/1/3/2/7/132740285/fodapipemu-wituxov-kajofa.pdfIn PDF document text
    • http://files.parentingincontext.org/uploads/1/3/1/6/131607683/fezisodivilinal.pdfIn PDF document text
    • http://files.davisborocircuit.org/uploads/1/3/1/6/131606197/fivodoz.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/ef8f9897-e100-4da2-ae63-9b6b40bd0a6b/35943891536.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01a5b3bc-8920-4490-8387-a29486583293/daseje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f75159d9-f112-4f58-93dd-cb05b0b9c499/2854782340.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8eb9fce-ed55-400d-b0ea-c81c7937c096/76447556792.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ad94386-393e-4477-8d3f-95df6ecd3691/37388780448.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_off0000584e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x584E 5428 bytes
SHA-256: f97b1794df4ae68dcf01687a7d8366c470899053683c65ab644c1edd68f3988a
font_01_sfnt_off00006aa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AA7 9760 bytes
SHA-256: cbbea6822aba6909b108d243ca76dd2dea60d29c703356a7c9174bb993557ac3

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