Malicious PDF — malware analysis report

Static analysis result for SHA-256 70859d00a4b4983b…

MALICIOUS

PDF

64.0 KB Created: 2020-11-06 12:48:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: bf7abe3d70d5dddc0855ffe4b658265b SHA-1: 598d93dc57c64fcf2d2c79012d2f772417fd614a SHA-256: 70859d00a4b4983bf8c5c7386d02107fdc9e016f52682ffbd358241d1d11c5a0
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://trafftec.ru/123?keyword=everstart+atv+battery+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4454545/normal_5fa40701a0980.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/henghuili-files/marguerite_yourcenar_memoirs_of_hadrian.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d01542d6-3ed8-4447-a522-791635a04dc1/secondary_math_1_module_1_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/kubarigosikib.pdfIn PDF document text
    • https://s3.amazonaws.com/vesubodufisi/online_editor_remove_pages.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/magic_quadrant_for_cloud_infrastructure_as_a_service.pdfIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/14403848592.pdfIn PDF document text
    • https://s3.amazonaws.com/viromibukoleliw/repibilav.pdfIn PDF document text
    • https://s3.amazonaws.com/gedimuta/60841971517.pdfIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/ruwiwedubixazogegure.pdfIn PDF document text
    • https://s3.amazonaws.com/tometubufimopim/plus_premieres_itunes.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/gold_gym_210_u_exercise_bikes.pdfIn PDF document text
    • https://s3.amazonaws.com/zikeko/85956578040.pdfIn PDF document text
    • https://s3.amazonaws.com/ninasivol/31735916246.pdfIn PDF document text
    • https://s3.amazonaws.com/wavunot/15945928377.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_off0000bc09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC09 5220 bytes
SHA-256: 07a014aa03bfbb137b1c2df2c0723c00ea38d90c7a427bb2338a73e2c992ce1b
font_01_sfnt_off0000cde5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDE5 10740 bytes
SHA-256: fa4bc0c355cd8753abc774955378725f55db2fb2a5a314f1314861e4a7507197