Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4932f1da90039eb…

MALICIOUS

PDF

49.8 KB Created: 2020-10-26 14:26:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 83f21f7b873286ecd37b51682d50b52f SHA-1: 3c99b103673f7abf8d1b841ad04fa861a74663c3 SHA-256: d4932f1da90039eb882c19aa6e85992aa9a63eb36581c52c6dd668fcd3387592
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://ttraff.link/pify?keyword=customary+marriage+act+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4372085/normal_5f8e80b163d30.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383475/normal_5f94a36959ee9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366957/normal_5f8739fcaca75.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/zidebesirolabavo.pdfIn PDF document text
    • https://kixatefibav.weebly.com/uploads/1/3/0/7/130776592/wepis_muzok_zigow_wopefotub.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/7989682.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000082a4.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000082a4.bin)
    • https://uploads.strikinglycdn.com/files/4c20ed9d-53b0-46b4-9895-a83be41d61c2/50139966993.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62330fc8-690e-4530-8820-3ea54d6c458b/sunudajirijasa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/335de4d8-8566-43c5-a5f7-255f45dc5fb9/syllabus_servidor_uno.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c0d79fe-9b0e-49f9-8874-66bd582762d7/68454387808.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/textbook_of_advanced_cardiac_life_support.pdfIn PDF document text
    • https://s3.amazonaws.com/fosalizuzu/popolexedipazuvuze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a75bb0b-c83b-4476-89d0-1aa550d1f786/xolamenijikejeni.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cdabd73c-878d-41e7-842d-f3897f012482/59085541615.pdfIn PDF document text
    • https://s3.amazonaws.com/dotivaf/91141423474.pdfIn PDF document text
    • https://s3.amazonaws.com/wotodedaruzuk/affairs_cloud_july_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/fefobefinowokamifoxixi.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/kojotodogozovevot.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_off000082a4.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_off000082a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82A4 5448 bytes
SHA-256: 798da75dde36038acc8b073b498755f238593f1be94b37f352b7ca5debee4189
font_01_sfnt_off00009521.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9521 10708 bytes
SHA-256: 9a75dacf6dec05f2b7779a2e7c5f308e6626d5e528aaa2be45cdf244da60f551

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