Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb7c779cc76129ec…

MALICIOUS

PDF

46.7 KB Created: 2020-10-02 13:35:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 7ccb35a22edda58303d4d05af13047dc SHA-1: 706e8bf966c5b2ce11c12dc9663dcf7b3621057c SHA-256: fb7c779cc76129ec80df33bda747776113ab0130e89f36f1cce18f8172731818
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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=catia+basic+tutorial+pdf In PDF document text
    • https://site-1036753.mozfiles.com/files/1036753/tupijobixane.pdfIn PDF document text
    • https://site-1037187.mozfiles.com/files/1037187/rikesuxop.pdfIn PDF document text
    • https://site-1036962.mozfiles.com/files/1036962/17083641754.pdfIn PDF document text
    • https://site-1039274.mozfiles.com/files/1039274/gazejuwalivotobuxubaxev.pdfIn PDF document text
    • https://site-1037160.mozfiles.com/files/1037160/saralurit.pdfIn PDF document text
    • https://site-1036819.mozfiles.com/files/1036819/66348435524.pdfIn PDF document text
    • https://site-1036951.mozfiles.com/files/1036951/karimogoxipejunolisek.pdfIn PDF document text
    • https://site-1037163.mozfiles.com/files/1037163/jovofo.pdfIn PDF document text
    • http://files.yogameditationdangers.com/uploads/1/3/2/7/132712407/7560755.pdfIn PDF document text
    • http://files.dstraveler.com/uploads/1/3/1/8/131856205/sewuzanug-kamolopesem-potifuwaxege-bikurufanexeba.pdfIn PDF document text
    • http://xalaluw.keenbeancoffee.com/uploads/1/3/0/8/130813042/1885f4a98ba52.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/80654dda-8e59-4cdc-a4f4-73e7a1575554/16638370526.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/435fa670-75ab-4e12-9a1a-4509ed93bd79/31374293583.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da0e3dbd-cb5f-4614-8bb6-677ae7b52503/zorefiguximoxekewanolamu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bfd9c22e-f9fb-4351-8015-87c671f24e9e/diwexuxorenale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db17f399-d072-437c-b95b-0b70debe24be/69099687251.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006afb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AFB 4972 bytes
SHA-256: 1addc26836a0c7802089dae76c2c9b6965177c4ab3e30503e2363a1e0bfa8b18
font_01_sfnt_off00007be5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BE5 10476 bytes
SHA-256: da05d70af97c433ff666d964d3014518484f7b9990263d9834c445de705e96df
font_02_sfnt_off00009fca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FCA 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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