Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bee62882cc07c97…

MALICIOUS

PDF

43.8 KB Created: 2020-10-05 22:21:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: dceb78df13ced7823a8fb5ee1e8096f0 SHA-1: 69fd1a91a91c87a28a1ec96fc14eb95eaea931a9 SHA-256: 3bee62882cc07c9739925449c1c6c813d9cb0bb55f0062dfec2b5ffd637e27d2
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://cctraff.ru/strik?keyword=crocs+size+chart In PDF document text
    • http://refan.paghosts.com/uploads/1/3/1/4/131437246/9657980.pdfIn PDF document text
    • http://files.thecherigroves.com/uploads/1/3/1/3/131398156/0c09cff1c7.pdfIn PDF document text
    • http://files.porterforselectman.com/uploads/1/3/0/7/130739069/kegufogifo-kepabojad-gabigiduse.pdfIn PDF document text
    • http://files.fountaincityartguild.com/uploads/1/3/1/6/131606890/c4e1e56.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://uploads.strikinglycdn.com/files/47fc43b3-47dd-45b5-aeca-2c792fcf9982/lijasomage.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e921e3bf-e1e8-4945-a73f-1e693cb5f1aa/wobosotezobomivazo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/145d2682-b35e-49c1-9bf1-e41976257c0b/bukunawilujivitaxo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c1a18ec-1ff0-4601-838c-c4a3bcd2e339/21066426572.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/370e3cae-f272-4a19-86cf-d32e9296acb7/rawutoxukowuboli.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68eee537-c139-490b-b409-341a87e75a45/19891129825.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f89d8c80-02ca-4e59-a7a5-83236f2d49e3/40469014403.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6911b435-4a69-4381-8291-1dbd970e8e3f/fuwedopejoweve.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b9c767a-5051-481b-a806-d88ded7f911d/36346900588.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b102eb4a-2a26-419f-891c-92c90adb3d73/rukinejorasatovaxozil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/409e7ec1-e970-43cb-87d2-44e702bbeb97/ralefisezupu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d73a1b28-3923-4419-a376-88889b33c9c2/47870057021.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006227.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6227 4608 bytes
SHA-256: bd8736ca8b447f9f79070fb8ae297a0db0149792d7ad7213282f3b8fc8dcc097
font_01_sfnt_off000071e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71E2 10156 bytes
SHA-256: 48628ae09dfd512aecb27c06db7d79b895032be84d52418400feef26e5ce34ed
font_02_sfnt_off000094ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94AE 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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