Malicious PDF — malware analysis report

Static analysis result for SHA-256 73c34bb7807e0272…

MALICIOUS

PDF

42.9 KB Created: 2020-10-26 06:18:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: c4e98f64ff6fa4074d5281711c313cc6 SHA-1: 9fc5ec445e8d732190a9394b6bf9a776504606ea SHA-256: 73c34bb7807e02726b372df2d15149a72613b31c5eb2d3de72a683c5ab9dbc4e
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://cctraff.ru/aws?keyword=essential+managers+effective+communication+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365657/normal_5f8d0d990cc16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372074/normal_5f8e4c178e3b6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387428/normal_5f937983ca710.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374536/normal_5f960e1bf2568.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370309/normal_5f8f183f84782.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377642/normal_5f8b94d899b0c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367941/normal_5f8c6aa411b20.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006cc6.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006cc6.bin)
    • https://s3.amazonaws.com/voropa/definicion_de_demografia.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/a_night_out_form_2.pdfIn PDF document text
    • https://s3.amazonaws.com/vuraradaso/apc_computer_applications_for_class_10.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0389052d-2f47-4e2d-9aaf-58d88bb2df5d/gebitafu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20029863-a469-4155-9132-fbcd4cfc8710/2950408773.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cacf83e0-d732-4b7d-9b73-d76908ee56ac/61443641034.pdfIn PDF document text
    • https://s3.amazonaws.com/xamapebonijos/sigawaborobitixamojavuko.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/jitutomuzotademokuzojilun.pdfIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/dejetamatifowupefik.pdfIn PDF document text
    • https://s3.amazonaws.com/senodiw/disez.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/application_of_computer_science_in_pharmacy.pdfIn PDF document text
    • https://s3.amazonaws.com/nowonovege/kexuxixas.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/garode.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 extracted file (font_00_sfnt_off00006cc6.bin)

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006cc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CC6 5492 bytes
SHA-256: 932b9bb6c7d373bda027a56403b0c96d8bc28a2b408bcf52fb1524cffeeaf943
font_01_sfnt_off00007f61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F61 9088 bytes
SHA-256: 5eda0e3170af415f0f5a80def5dc15973e28ad0c6aaea7047e500873de47df7d

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