Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec3365a06f97aba5…

MALICIOUS

PDF

41.8 KB Created: 2020-11-09 13:43:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15
MD5: ac67488e8e0bf5050a12e7dea1b353ba SHA-1: c39e3ad4c8d425e729a770501d7b7ad7bf2fa9d5 SHA-256: ec3365a06f97aba5a23207ac749ff4b74a2a810b3b2453f37150d029a781688c
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/123?keyword=memphis+tennessee+zip+code+38134 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4382620/normal_5f9fa0f92dfff.pdfIn PDF document text
    • https://panidulupeju.weebly.com/uploads/1/3/0/9/130969186/4264a.pdfIn PDF document text
    • https://kubuwexujilo.weebly.com/uploads/1/3/4/4/134473085/vajig-simubig-gevekawuzi-wemod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459320/normal_5fa7a2514e70a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368972/normal_5f8ffb58d3d85.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367297/normal_5f891318eb3c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366354/normal_5f87829220b06.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/36ec265d-2ee4-4e7d-9c44-e56891ed6911/84930514984.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c205d0e1-7b07-4b6d-bdbe-ac05d1b3ed59/kotor_best_build_reddit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94e550ca-8183-4b07-97e3-216e8e774e26/59863114488.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/848bc7b2-4630-4fba-a130-1372778e1394/facebook_app_download_for_pc_10.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/857d15c1-912d-41cf-a63b-e9a0690c46db/black_and_decker_toaster_oven_manual_to1332bd.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_off000062c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62C9 5528 bytes
SHA-256: 57739c8777e815a08e244d986f9facc74910eeebfe066a845d155c33bfa87787
font_01_sfnt_off00007596.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7596 10880 bytes
SHA-256: b30c97fca2d192f10e2d2d20c3f746cdffb8bc9fd5b7c78fec5d399843ac993c