Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8519b93dc0ee9f8…

MALICIOUS

PDF

70.6 KB Created: 2021-02-24 21:26:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: fccd3df5af0cd8c3ea34a0a0d32b5867 SHA-1: 7311abb4c14fc6086b308ed318a6e38baf2fe0ba SHA-256: f8519b93dc0ee9f8c2e5dac6279aa56658bc90b01ff81b423fd06727aa9a0668
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://jottigo.ru/strik?utm_term=the+graveyard+book+graphic+novel+single+volume PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4492892/normal_6010c4808f62f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366984/normal_6001e06933efa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445726/normal_5fc9461bb231c.pdfIn PDF document text
    • https://gulekikafosevog.weebly.com/uploads/1/3/2/3/132303175/xasodurux.pdfIn PDF document text
    • https://dasujodiket.weebly.com/uploads/1/3/4/4/134481559/8844897.pdfIn PDF document text
    • http://didazema.mypressonline.com/67318759766.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446030/normal_5fffb092e3d81.pdfIn PDF document text
    • http://golixudib.mypressonline.com/53811559933.pdfIn PDF document text
    • http://jikusofare.mywebcommunity.org/tamorekugemikefaxukimekaw.pdfIn PDF document text
    • https://jetujipizi.weebly.com/uploads/1/3/0/8/130813705/6cef315d147.pdfIn PDF document text
    • https://dojulukasinu.weebly.com/uploads/1/3/0/7/130776790/sizexajukukefa-ganawipebubanux-zolagadobi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tefetuzuzip.myartsonline.com/john_deere_compact_tractors_near_me.pdfIn PDF document text
    • https://s3.amazonaws.com/redegelesibif/captain_america_series.pdfIn PDF document text
    • http://sutexuvidag.myartsonline.com/nonorex.pdfIn PDF document text
    • https://s3.amazonaws.com/tokafanawa/references_template_indeed.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_off0000d3f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3F9 5804 bytes
SHA-256: 38307c099f1a607d316f1f3b0d47a674fbd3656945c4f26c7ba7ae92cef9ef19
font_01_sfnt_off0000e796.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE796 11016 bytes
SHA-256: 25fbd07f223b9935c158cb7ae30eaa4fbac15ccd1158399d1c9e1054b269f64b