Malicious PDF — malware analysis report

Static analysis result for SHA-256 77bb694ce67ebfbe…

MALICIOUS

PDF

73.4 KB Created: 2021-02-04 13:33:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 163bfcdc78d892b12d87a7f0c354d63b SHA-1: 85acd7106a7c78d4cd5ac9c3b60a23de4ce8b02b SHA-256: 77bb694ce67ebfbe64a6cc01e43a1c9c9a1cbb7491cce97535e8de11b778efad
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://seumenha.ru/aws?utm_term=belgrade+tourist+guide+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4450734/normal_600d648622001.pdfIn PDF document text
    • https://cdn.sqhk.co/pakebisas/Nxjjbid/apex_resort_weather_forecast.pdfIn PDF document text
    • http://org-fruit.space/fumikudiko3dp4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370263/normal_5fd23738cbde8.pdfIn PDF document text
    • https://cdn.sqhk.co/lidojuxuxiro/cAQ8JCL/dofak.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421781/normal_6006383e0da5a.pdfIn PDF document text
    • https://cdn.sqhk.co/komagiju/dNjfjdt/smartsheet_tutorial_forms.pdfIn PDF document text
    • http://pek-24.cc/trace_mobile_number_current_location_through_satellitedvqlj.pdfIn PDF document text
    • https://cdn.sqhk.co/giganopof/2aW43Ba/pewakovojojamuj.pdfIn PDF document text
    • https://cdn.sqhk.co/gikasiful/IzghtvY/nerazodovumesarezedu.pdfIn PDF document text
    • https://cdn.sqhk.co/wazofovam/7CDidjf/65527025765.pdfIn PDF document text
    • https://cdn.sqhk.co/gevajoke/ridjcji/quran_tafsir_ibn_kathir_english_audio.pdfIn PDF document text
    • http://befigter.xyz/xedozomaxepodacymhc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479214/normal_5ffb0fb750806.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/tuzamada/astrazeneca_uk_annual_report_2017.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_off0000e0d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0D3 5260 bytes
SHA-256: 60857a052eb0d0952cb60fb12edd5e4c103ae52eb8b2f027181f70f092483a79
font_01_sfnt_off0000f2c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2C6 10788 bytes
SHA-256: f225a049c9862b2ea409e9886ca1c2bc2f50d298bc20b81dd7952b83842cae7d