Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff6c358f4c2d35f1…

MALICIOUS

PDF

70.0 KB Created: 2020-10-07 16:30:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 3d10b75b4fcabbdbaa7e7d0ece4f9885 SHA-1: 7a91a284fb01c85cbd59a4a364facc8bf2101ef5 SHA-256: ff6c358f4c2d35f1c886efae03fed24a5216d41b20f5571f0ad2e362cbc6d42e
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://gettraff.ru/strik?keyword=the+cherry+orchard+by+anton+chekhov+pdf In PDF document text
    • https://site-1040006.mozfiles.com/files/1040006/64272554048.pdfIn PDF document text
    • https://site-1036941.mozfiles.com/files/1036941/vitid.pdfIn PDF document text
    • https://site-1037035.mozfiles.com/files/1037035/mezivajebelakomojinew.pdfIn PDF document text
    • https://site-1043246.mozfiles.com/files/1043246/saxovasigumasokeza.pdfIn PDF document text
    • https://site-1038749.mozfiles.com/files/1038749/45282282545.pdfIn PDF document text
    • https://site-1037157.mozfiles.com/files/1037157/zenanivoxufebozatibe.pdfIn PDF document text
    • https://site-1037009.mozfiles.com/files/1037009/88695773276.pdfIn PDF document text
    • http://files.stephenbeaumont.com/uploads/1/3/2/6/132683014/7655527.pdfIn PDF document text
    • http://files.mbapierce-rex.com/uploads/1/3/1/3/131380453/xewuxaxutirusiwuw.pdfIn PDF document text
    • http://xovigo.maldiver.net/uploads/1/3/0/9/130969352/fa069bcbf155403.pdfIn PDF document text
    • http://fogonar.balihoteltransfers.com/uploads/1/3/0/8/130874210/poliwar.pdfIn PDF document text
    • http://kodafoful.elportalschoolptg.com/uploads/1/3/1/6/131606666/3302135.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/e677798d-c084-49f6-a442-c81fb262b2b5/4089581799.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4bf6329-421a-4d3d-8679-84b5c79426f3/vevexukuteged.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8261734d-4918-4270-98bc-c45d248ac631/nivemezufutaresetixekej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b0d8416-ac0e-4b9c-a1d4-cca6907970c5/jesiludojotajos.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d587.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD587 5348 bytes
SHA-256: e681ffa4f18a7bc2edaf6b4a4eb742683d96a1bfa11ec9328aa796419f02f0b8
font_01_sfnt_off0000e7bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7BC 10328 bytes
SHA-256: aaf83ec40dae98afac5003d6e2cd2d75c2dfaeb5f01195dbab30df7113125a78

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