Malicious PDF — malware analysis report

Static analysis result for SHA-256 4edd566fe4d7e052…

MALICIOUS

PDF

41.0 KB Created: 2020-09-30 01:19:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 4f48cd75ac697abe4f24a770396bccab SHA-1: 19c4536a6bb72980d855b8e82e13adb138a24650 SHA-256: 4edd566fe4d7e0528de19074337878b2361714cbc70c15689bb4bee6613ab255
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/strik?keyword=arduino+uno+programacion+pdf In PDF document text
    • http://files.charmcitypetcrematory.com/uploads/1/3/1/3/131380944/pulukopuso_xemusiz_zapogole.pdfIn PDF document text
    • http://fidoguvub.hearing-aids-bozeman-mt.com/uploads/1/3/0/8/130874380/7924091028.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/1/0440/9255/5416/files/teleragepagutojagage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5498/0505/files/62900310656.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1224/4134/files/calvary_temple_messages_videos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8526/7097/files/bapadawofosobumutosixo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2730/7416/files/98756592569.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef2cd33a-60e0-469c-9f07-a58a4c1bad0a/sigogin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76e6fce2-c030-47f0-9ee7-65f924ee464d/19865733512.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/faf38875-279d-4710-96e8-f59ef765a1a3/ramadusavesorusoketotu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c66edba-6bdd-42ad-862f-87ad102cd92b/fezajuvunawatu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98aea414-a4de-4207-a51e-93a8fde7e4d7/badibozukinifusujikel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e192c9c-bb24-4890-a5a9-b95577cccf99/wewozatapofobuxux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f727f262-ca3b-4c40-92a0-9b470813ac27/togafitufa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13af6d5c-7b87-477a-802c-a98bbbeae051/72658539226.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60A0 5256 bytes
SHA-256: aa1f9f55206ab199f28aaabd46061cf938fc200088fc0033254eacf8c2f7f36e
font_01_sfnt_off00007277.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7277 10700 bytes
SHA-256: 8d9a2f6eb665f1357499ec27d5f6ee0ad6ad32de6ad05fbbbfda52599b7b2379

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