Malicious PDF — malware analysis report

Static analysis result for SHA-256 92876d0e8af7c568…

MALICIOUS

PDF

42.9 KB Created: 2020-10-04 11:03:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 1ae06a46b369fe5990351936fb58d3b7 SHA-1: 235b3e95f44682f5ff141242715e206ca1a43723 SHA-256: 92876d0e8af7c5685dbf948047878747fd46dc79d70cef40645f313e28cb375a
132 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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.cc/pify?keyword=monster+park+mod+apk+revdl In PDF document text
    • http://pegati.uhsguidance.com/uploads/1/3/1/3/131398140/12ef8ae464af81c.pdfIn PDF document text
    • http://fijuxa.siscommunitygarden.com/uploads/1/3/1/4/131453048/sawofije.pdfIn PDF document text
    • http://pupavov.byyoursidepet.com/uploads/1/3/1/1/131164504/tubamug-jojuzogagenus.pdfIn PDF document text
    • http://tunoloke.zoesbluemoon.com/uploads/1/3/1/3/131398455/joxavupise.pdfIn PDF document text
    • https://site-1037283.mozfiles.com/files/1037283/xerojaloxajuribeveritigok.pdfIn PDF document text
    • https://site-1038725.mozfiles.com/files/1038725/xugopuzatar.pdfIn PDF document text
    • https://site-1038601.mozfiles.com/files/1038601/46623309245.pdfIn PDF document text
    • https://site-1037184.mozfiles.com/files/1037184/81273039165.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/439d1511-6105-4f54-94a8-43b1c84bec95/23251869327.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a4cadf5-c8f8-4c0e-8dbe-50745368116a/17346745975.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68c6b8fc-737c-4717-aae1-813aed36cd93/sovipidosuzafifep.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_off0000679a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x679A 5232 bytes
SHA-256: 06aee6059cbf09f6350c544e0b64c0d64d91aec870811a9294e259e9f3db1347
font_01_sfnt_off00007963.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7963 11444 bytes
SHA-256: 06b521a25a2fb0f3eae1b33500f7fccb334271e8f55f1da11e1eefc4d96a0a21