Malicious PDF — malware analysis report

Static analysis result for SHA-256 62876ec7cb8bac33…

MALICIOUS

PDF

44.0 KB Created: 2020-10-25 12:23:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: f9e64f1c3e5b07c4dfd6a60fd0782880 SHA-1: c12e6166728f1bd11b62dbfda9a159453c6de7fe SHA-256: 62876ec7cb8bac33ea90a737aefdddcb83a9e90819ec6c96d05e6db225754c04
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=digitally+imported+apk+download In PDF document text
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/72d6abcc2.pdfIn PDF document text
    • https://tubenuluni.weebly.com/uploads/1/3/1/4/131437864/batezumezesaragimil.pdfIn PDF document text
    • https://pejopazuzaguwoz.weebly.com/uploads/1/3/2/8/132815183/xelagesavutefu.pdfIn PDF document text
    • https://pumowurunumig.weebly.com/uploads/1/3/2/7/132740285/zamupudebomimaze.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/xojajuv-mitegejitokuxig.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367302/normal_5f926cdc3f05e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370273/normal_5f8f2baff1fc2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370077/normal_5f913994ee891.pdfIn PDF document text
    • https://gejatovuri.weebly.com/uploads/1/3/1/4/131406669/mowumuzew-novezanoxizoj.pdfIn PDF document text
    • https://xujaxivef.weebly.com/uploads/1/3/1/4/131438557/degip.pdfIn PDF document text
    • https://femevidawivuk.weebly.com/uploads/1/3/1/0/131071063/bddfcf85e61f6e.pdfIn PDF document text
    • https://suleduzon.weebly.com/uploads/1/3/4/4/134403341/panetelojopu-neduveretij.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366645/normal_5f8dfcb9936f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393761/normal_5f90099cbbeb6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370540/normal_5f9507c823cdc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365562/normal_5f8751f02d65f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375884/normal_5f8d2571165bf.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006b0d.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006b0d.bin)
    • https://uploads.strikinglycdn.com/files/851434f9-9293-412e-a4a1-21a21cfa3e96/asmaul_husna_lengkap_dengan_artinya.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac69b4b7-66c5-4e23-8dd8-90a9ece93709/sectional_anatomy_for_imaging_professionals_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0af78e67-81ba-4152-b945-5502855624f9/lejowivilonigafajowanomu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/283bb23e-ab7b-496b-b8fe-cd20bf697089/lady_bird_lake_address.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/51051135661.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/bemerujonipobu.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 extracted file (font_00_sfnt_off00006b0d.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B0D 5360 bytes
SHA-256: 533f1871be3486dac76a65b75d4a45d44f114573b978225caa7e041d3b9a99c9
font_01_sfnt_off00007d4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D4C 10988 bytes
SHA-256: 17f3d1aea48fe1a6315eb0d87a0fce7baf252ef27309dd9cf8d2a5ddb888d322