Malicious PDF — malware analysis report

Static analysis result for SHA-256 12225963fc6b6fb5…

MALICIOUS

PDF

41.7 KB Created: 2020-11-04 16:53:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 2279abf538018d1a277f241f8ef02bb6 SHA-1: 183f663dc70e0f020c6af952894e66b44651d321 SHA-256: 12225963fc6b6fb562f1e45e0ee440c49ddcfb6bf03e2169e734d363d324501f
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/123?keyword=zenith+remote+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366642/normal_5f8b2e362a8ab.pdfIn PDF document text
    • https://fuwozubasuzej.weebly.com/uploads/1/3/4/4/134473550/tunenadena_xuzusebaxim_nudikakuxejedo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368266/normal_5f9eb96ac9cc9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384817/normal_5f9fa37123da7.pdfIn PDF document text
    • https://bepupigo.weebly.com/uploads/1/3/4/3/134317889/tuboxeruwomarukutuze.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447271/normal_5f9ea424729b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366017/normal_5f9d18b390d86.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/6069273.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/lovetijif/midtown_eye_care_omaha.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0365984-dd52-43bf-8bd5-50c4d0e10d9d/guwarirowokabexekipeko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e33a560-db02-41bd-a491-45e92aaa294a/48206267058.pdfIn PDF document text
    • https://s3.amazonaws.com/ragejufa/good_copy_and_pastes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3cfe12e8-d003-4f17-a4f4-a2b3a24245ab/1357910907.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_off000066fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66FA 4704 bytes
SHA-256: dbf4838f911a7ca92465ab21b51d116f4bcb939e52c3896aa9b0604592e701fc
font_01_sfnt_off000076c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76C6 10464 bytes
SHA-256: 943489ab3a573b8cdadead8da336e989085d589100dfbda102755850777f95a4