Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3637ab85e9e584f…

MALICIOUS

PDF

44.7 KB Created: 2020-11-09 06:35:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: 4f5bc281b913cd4c52af2e116fb6fdbe SHA-1: 9b88a6bd85dd54ba06ee3f988b2609c768bf86a9 SHA-256: e3637ab85e9e584fb330543137141e8ee44bfd53ab3b6c3d96c5e2917e18e9e0
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=ethnic+religion+definition+examples PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4375093/normal_5f8a654d329b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374700/normal_5fa0a454a17b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374189/normal_5f890542b39e8.pdfIn PDF document text
    • https://zukamukenipebo.weebly.com/uploads/1/3/1/3/131380388/3947068.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477173/normal_5fa7853dca11d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408992/normal_5f9afb4d03d57.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367964/normal_5f884690513f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369160/normal_5f88d4aa186bc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://vexidip.files.wordpress.com/2020/11/51226523667.pdfIn PDF document text
    • https://rezekine.files.wordpress.com/2020/11/tatojesanawav.pdfIn PDF document text
    • https://rigimep.files.wordpress.com/2020/11/contribution_of_administrative_management_theory.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000607b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x607B 5384 bytes
SHA-256: 78421d585c0c38ae185f2a5677d5245b6b19fcf6f1a21552fc2ab83cb0344bbc
font_01_sfnt_off00007293.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7293 11648 bytes
SHA-256: 4d6b2a1a290087c920365d7687ac4f00995e4a399c2b93584263b5e17b5581fb
font_02_sfnt_off00009808.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9808 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

Open this report in the interactive analyzer, or submit your own file for analysis.