Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab31c32b3d58b322…

MALICIOUS

PDF

67.6 KB Created: 2021-02-12 20:29:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b9a6933e180035ab6f41da5332a9aef3 SHA-1: 77d3df4cdf1a43803dee0f08ae94907986180f96 SHA-256: ab31c32b3d58b322f400627690cf5e2fdbfe3983fd4e67783b20cb006c180768
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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.
  • 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://baarspo.ru/123?utm_term=john+8+33+kanye PDF link annotation
    • https://kojemugolipoxo.weebly.com/uploads/1/3/4/7/134729864/8199725.pdfIn PDF document text
    • https://cdn.sqhk.co/jeviseme/edjecY0/bunny_boots_for_sale_canada.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488560/normal_5fceeb317c85d.pdfIn PDF document text
    • https://cdn.sqhk.co/netesatova/gchaBic/99028076466.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475572/normal_601f5e2b50e94.pdfIn PDF document text
    • https://cdn.sqhk.co/pexufenek/jfNgjFI/fear_the_walking_dead_full_episodes_free_download.pdfIn PDF document text
    • http://wugigazugijub.22web.org/guided_meditation_for_healing_and_sleep.pdfIn PDF document text
    • https://cdn.sqhk.co/mifigatira/qhayjhQ/real_followers_and_likes_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/xubupigegi/jciiijN/lakigatom.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369909/normal_601d8306a725a.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/tigewibejageju/repanexeba.pdfIn PDF document text
    • http://foxebunuref.epizy.com/start_again_kyle_olthoff_song.pdfIn PDF document text
    • http://vawolibosabope.rf.gd/giguv.pdfIn PDF document text
    • https://s3.amazonaws.com/sorogamat/google_analytics_reporting_api_limits.pdfIn PDF document text
    • https://s3.amazonaws.com/xebuvuwov/bollywood_horror_movies_hd.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_off0000cded.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDED 4980 bytes
SHA-256: dc7ad0bc9cc05cded602f45bcf8216de6370be03022a2feca8d1fca8bc60ad6d
font_01_sfnt_off0000dee6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEE6 10372 bytes
SHA-256: 7305be293b70ffcb2de6ce961f60c495909341b126e2858a44915764add9fd69