Malicious PDF — malware analysis report

Static analysis result for SHA-256 f045a0323aac6303…

MALICIOUS

PDF

44.1 KB Created: 2020-10-15 18:08:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 6083290562f5c8b90ae8880f0dce2777 SHA-1: fe23c42f96a028dda1042799e804a3b052d7787a SHA-256: f045a0323aac63035f9488d3516430d7f99200248dab2f782e85d2e5b6d7df6e
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.
  • 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://gettraff.ru/123?keyword=all+about+me+worksheet+for+adults+pdf In PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/8e42bfb8d1b0f.pdfIn PDF document text
    • https://fuparududewon.weebly.com/uploads/1/3/1/8/131856041/96c09c94888.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/filosom-lusiwikafese-jerupuxorukoti-novubolifunuw.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/gevoderovepiru.pdfIn PDF document text
    • https://folanejo.weebly.com/uploads/1/3/0/7/130776558/4325082.pdfIn PDF document text
    • https://lagukekejase.weebly.com/uploads/1/3/0/8/130815031/6371798.pdfIn PDF document text
    • https://tiposowa.weebly.com/uploads/1/3/1/1/131164246/3b14a99be2b2.pdfIn PDF document text
    • https://mamunazeve.weebly.com/uploads/1/3/0/8/130814121/3295207.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366312/normal_5f8749615242d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368989/normal_5f87d6a1324fc.pdfIn PDF document text
    • https://site-1043087.mozfiles.com/files/1043087/dazegatogumijezazilogonu.pdfIn PDF document text
    • https://site-1042271.mozfiles.com/files/1042271/lapimiwupozamanulusariv.pdfIn PDF document text
    • https://site-1038387.mozfiles.com/files/1038387/16179837717.pdfIn PDF document text
    • https://site-1043292.mozfiles.com/files/1043292/61507456891.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368964/normal_5f87cf642cd86.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366388/normal_5f875a825e876.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366665/normal_5f87a50f4ea07.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366408/normal_5f882a9c1c095.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/8198/2645/files/apkpure_uc_browser_lite.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/8245/2644/files/wonokuzunezip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/0524/6112/files/timbaland_shock_value_zip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9132/0214/files/direbupa.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_off00006cef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CEF 5568 bytes
SHA-256: 281433311b456df930c77a2257dbb3c75c9a3a630923a7eb904910ad77e03175
font_01_sfnt_off00007fc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FC4 10280 bytes
SHA-256: 5eb5da3be7d51462ba68a7e9e4a33a483f71289e4cb202d66885bc167585324e