Malicious PDF — malware analysis report

Static analysis result for SHA-256 d081a96c56fff817…

MALICIOUS

PDF

42.7 KB Created: 2020-10-29 18:31:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: ce468e4daedfe4427038bb6acd3dca4b SHA-1: 5aa16ad3291894f628a3f2506902375604ecb597 SHA-256: d081a96c56fff8178568ca80d4281744c8872dfb07051cdcd4c6fe280016dd0b
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.me/123?keyword=video+devil+apk In PDF document text
    • https://zoxamadafipezo.weebly.com/uploads/1/3/1/1/131164297/difezaxi-vonupil-barab-fuwogivixobuji.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367687/normal_5f8937df34e05.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369779/normal_5f8803d5c9c3d.pdfIn PDF document text
    • https://genamimiwovem.weebly.com/uploads/1/3/1/6/131636881/fobonuripojeli.pdfIn PDF document text
    • https://zuragani.weebly.com/uploads/1/3/1/4/131438510/novusudoxis.pdfIn PDF document text
    • https://tivurenufetoza.weebly.com/uploads/1/3/4/2/134235987/wigufokipolu.pdfIn PDF document text
    • https://walijogopabo.weebly.com/uploads/1/3/0/7/130776167/3067697.pdfIn PDF document text
    • https://digonowokeke.weebly.com/uploads/1/3/1/8/131856318/modasofibekozov-mifowatefovovo-mogeboluvawoxu.pdfIn PDF document text
    • https://dojudiwoju.weebly.com/uploads/1/3/1/4/131406456/bupomomubul_pukuxi.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/74e22f58-bb5d-4955-a9eb-1345f3545715/tolerancias_y_ajustes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6719c6a3-378a-4dd4-af49-658de96385e4/jegukodubelikagebofelitaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ca285d0-f57f-4d37-8fa5-a2758c63336d/49331756093.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf41e5ae-488a-4d37-9f92-9a1e2bab4763/97658813897.pdfIn PDF document text
    • https://s3.amazonaws.com/zonivezada/memekuzunobugir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cfe5938c-775d-466e-80c0-494fa470b07d/vonozilus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c57e214-d516-4070-85cb-d278db0fd005/rikobobebafezutofanaze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9cb1ac88-aff3-439b-8d9c-9a9448835748/52170950262.pdfIn PDF document text
    • https://s3.amazonaws.com/senodiw/soccer_worksheet_answer_key.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_off000068a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68A0 4768 bytes
SHA-256: f5e104beb8fe3f1d5964f2c9fb20afb6a51ecc1df17809dc295f5718083a5147
font_01_sfnt_off000078f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78F8 10956 bytes
SHA-256: 396f735600c1fc0e2de859707701bad4a665db9607fb574d87723ccc07043858

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