Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cfe4f5a624695a8…

MALICIOUS

PDF

65.0 KB Created: 2020-11-01 08:47:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 6f984e1243373597b11da6bd03563854 SHA-1: e38bde7d4c78ec2070bc79996bee70988de4342c SHA-256: 2cfe4f5a624695a8304663fdd03c4fc783e9d960ea3704ce7185075e71ae865e
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://ggtraff.ru/strik?keyword=sony+cdx+gt565up+owners+manual In PDF document text
    • https://gudojovevisepu.weebly.com/uploads/1/3/4/3/134314990/0c39f0dd124bb.pdfIn PDF document text
    • https://putigazabikikim.weebly.com/uploads/1/3/2/6/132682718/zusoba.pdfIn PDF document text
    • https://nozagovedenide.weebly.com/uploads/1/3/2/6/132682533/jakenetib_gapomasev_piwuxabosilonaw.pdfIn PDF document text
    • https://nasinapalu.weebly.com/uploads/1/3/0/7/130739684/6025596.pdfIn PDF document text
    • https://wozuwonasanava.weebly.com/uploads/1/3/1/4/131483955/kegasitapakipuxa.pdfIn PDF document text
    • https://wunimebi.weebly.com/uploads/1/3/4/3/134361225/jejer-loneradaviwi-wobijawod-lodorisoz.pdfIn PDF document text
    • https://winomumamo.weebly.com/uploads/1/3/1/0/131070375/5066370.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xakapudakadu/watch_frozen_online_free_streaming.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/089bb22e-d9e1-4a46-a0e2-02d2dfeee3c1/mopewabimazifawo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95500aa6-a980-4ab8-9c75-0438a17ce34c/xepirelovufenawiw.pdfIn PDF document text
    • https://s3.amazonaws.com/pafiganovavi/18037426466.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/71272288855.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_off0000bc82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC82 6036 bytes
SHA-256: cf828c6f0319254a4b140417113b74ab89dcf523789720b02f7724fd3bcb96a1
font_01_sfnt_off0000d113.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD113 11276 bytes
SHA-256: 09952ff7aa6740a5dc048b87952f9358d5b2a07036a9e0f665898ae28e79910c