Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fe84523ddcf6ebc…

MALICIOUS

PDF

87.2 KB Created: 2021-02-19 06:48:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 9bec1e82c67347bd46238e61c4c4e887 SHA-1: 912c7707ab3976e293c928fe4812abbce12d7f10 SHA-256: 1fe84523ddcf6ebcfc5641f6a296e6b1f7c5e7e09e9c29a680d9f1ffd405aa55
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous embedded URLs, with several pointing to potentially malicious domains. The 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic indicates a deliberate attempt to create a large number of links on disposable hosting, suggesting a phishing or malware distribution campaign. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • 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://maypoin.ru/strik?utm_term=mr+heater+big+maxx+ignition+problems PDF link annotation
    • http://bitasifo.22web.org/ribanoxupurajajatuba.pdfIn PDF document text
    • http://jidobefom.iblogger.org/zijejixugolidow.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493578/normal_5fc880da8921b.pdfIn PDF document text
    • https://tabupuja.weebly.com/uploads/1/3/4/6/134647436/wimazagede.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490263/normal_5fca9d15284a3.pdfIn PDF document text
    • https://talotemeve.weebly.com/uploads/1/3/1/6/131606578/laxunesa.pdfIn PDF document text
    • https://wafulezejo.weebly.com/uploads/1/3/4/7/134748518/logoreberesekewevelu.pdfIn PDF document text
    • https://laxonetamaj.weebly.com/uploads/1/3/4/0/134096763/xidulowuve.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471273/normal_601e807778884.pdfIn PDF document text
    • https://zonanasuwovu.weebly.com/uploads/1/3/2/6/132683154/meluxawef_rizasunujikat_pisafejekide.pdfIn PDF document text
    • http://nizagose.66ghz.com/somasiluvutexo.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
    • http://podoremekuzepo.rf.gd/novevujokesosizuwonef.pdfIn PDF document text
    • http://xekifoxudiduvaf.rf.gd/rikosikibowozu.pdfIn PDF document text
    • http://jebebubijegew.rf.gd/74655045668.pdfIn PDF document text
    • http://bikukasosisado.epizy.com/game_crash_bandicoot_free.pdfIn PDF document text
    • http://kubusefot.epizy.com/jitemoderuwagopukok.pdfIn PDF document text
    • http://vevubajiziju.epizy.com/76700312172.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010058.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10058 5236 bytes
SHA-256: 764b6882de65c045b18f26216195ae038ba89d69d64a0bd9824d9fee1b3b6fcf
font_01_sfnt_off000111f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111F6 1960 bytes
SHA-256: 8dd697e9e8a11adb57b34150a5b284e0e9dab038a2a583188dae2859d6e51ca1
font_02_sfnt_off00011af9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AF9 11088 bytes
SHA-256: 861d3cc7f35e131992a39b478f3a6228e2f800e4140c4cce2b330e699116b476
font_03_sfnt_off0001409e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1409E 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

Open this report in the interactive analyzer, or submit your own file for analysis.