Malicious PDF — malware analysis report

Static analysis result for SHA-256 427d673ea223fe1e…

MALICIOUS

PDF

46.5 KB Created: 2020-11-09 11:36:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 41c37346a358df97f88c32deb3de6d9a SHA-1: 2c49dd722e1c038ebc7c9a4a1cd3241500a3ccbf SHA-256: 427d673ea223fe1e46fe44064a5d730eeedd0a123b28a8e6ba33abd3426618b5
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://traffset.ru/aws?keyword=blood+in+blood+out+mural+location PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4385852/normal_5fa71569ef7c2.pdfIn PDF document text
    • https://letalisukom.weebly.com/uploads/1/3/4/3/134316231/dikidukile_vusifu_jedirov_zapadubutus.pdfIn PDF document text
    • https://kogatakuzomaw.weebly.com/uploads/1/3/4/4/134444425/4184494.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459624/normal_5fa867d8a1262.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374532/normal_5f9592e66fde1.pdfIn PDF document text
    • https://roneresikixa.weebly.com/uploads/1/3/4/4/134476702/migezakanes_zunoku_vazepekijaxuge_ketalugeluwub.pdfIn PDF document text
    • https://rebivawofud.weebly.com/uploads/1/3/4/3/134375894/tigalotekos-robetebumimu-nezulimozureg.pdfIn PDF document text
    • https://nabutamu.weebly.com/uploads/1/3/4/5/134525390/bexirigijomu_degero_ludadedug.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/xafaxotaful/diagnostico_anemia_ferropriva.pdfIn PDF document text
    • https://s3.amazonaws.com/zuses/54569865600.pdfIn PDF document text
    • https://s3.amazonaws.com/xokebore/14423400410.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/surowanefufixip.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/hitchhikers_guide_to_the_galaxy_reading_level.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/cardiovascular_system_test.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f3f7b40-b09d-4160-9bcd-df7d1443b9d8/velur.pdfIn PDF document text
    • https://s3.amazonaws.com/babuxufarizuxur/taquicardia_ventricular_definicion.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_off00007694.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7694 5096 bytes
SHA-256: aa3ad43aab40148c69ffb5a622b446dfffd0d4cb53e3d3d8b7ede391e345a26c
font_01_sfnt_off000087c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87C7 10956 bytes
SHA-256: 832ac8fd60014e472c7ca1f7cdeca99ae385faab21513e428c5d126a6766cdc4