Malicious PDF — malware analysis report

Static analysis result for SHA-256 bac456732fa91634…

MALICIOUS

PDF

63.1 KB Created: 2020-10-19 04:06:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 95919b09ba54f3e1910240cc4240d33f SHA-1: 0d4db6dcf84162e3195420d7935906df3f54b49f SHA-256: bac456732fa91634039a5fb3db43421e90cda9434c7a24d0d6b81462124cb9b0
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://ttraff.link/123?keyword=talking+tom+2+hack+apk In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365657/normal_5f8b921c02cc3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366324/normal_5f8737c6d2795.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366661/normal_5f88c4426398d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368495/normal_5f8891a5d7b86.pdfIn PDF document text
    • https://gemaxudemaxepeb.weebly.com/uploads/1/3/1/0/131070646/15e8d3c62b9a40e.pdfIn PDF document text
    • https://mabanopovofed.weebly.com/uploads/1/3/1/4/131453130/jebedoxivadimux.pdfIn PDF document text
    • https://jikeberu.weebly.com/uploads/1/3/1/8/131857846/05ed4bde80eb.pdfIn PDF document text
    • https://dirigesibujov.weebly.com/uploads/1/3/0/9/130969991/dafijogisok-pupilolifuxil-lorojuzej-sopuvadupikabox.pdfIn PDF document text
    • https://senobatupubem.weebly.com/uploads/1/3/1/4/131437889/6297374.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/e5bcd2697.pdfIn PDF document text
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/texorabaseb.pdfIn PDF document text
    • https://gemenudotipetal.weebly.com/uploads/1/3/2/6/132695720/zizeduzo.pdfIn PDF document text
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/xefafimofaxeparekuji.pdfIn PDF document text
    • https://balejumefem.weebly.com/uploads/1/3/0/8/130814467/sopebozelumoselop.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/199877.pdfIn PDF document text
    • https://latenenagizogip.weebly.com/uploads/1/3/2/6/132696064/a2fcf7f21f3be74.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3071/5288/files/types_of_schedule_in_dbms.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2956aa7-31d8-46f1-bf99-99e8dc534da8/paribiza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd605259-0419-410f-ba86-09c4b2d894f7/gagabubilezuxafasolinozu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47fc4c4c-e2ff-4899-bd8b-3757e349bc04/xozusaxegesolobot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f56ccdc5-fb9d-4765-b9b4-f7f16a5c7202/25650856626.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ff681f4-f12f-48f5-9691-86db0c0cff95/70597919735.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_off0000ba38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA38 5216 bytes
SHA-256: fe1621217543ef55775a458456f08bf4ee010fa410d1fc1745c37c32e8c422d1
font_01_sfnt_off0000cbd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBD5 10436 bytes
SHA-256: 5fd3ff31d68ac65b99d956d6030e303dec0852c8d4e7338557d50108bd590184

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