Malicious PDF — malware analysis report

Static analysis result for SHA-256 fea95242fddb16f3…

MALICIOUS

PDF

41.0 KB Created: 2020-10-04 17:41:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 8ac18d58aae0248b0da27bdc456c1ef4 SHA-1: 9e0725891209f7b0ce13cc3b3b5e7535f48a2c56 SHA-256: fea95242fddb16f3407ac4458698af162b918862e92eab5b03338b25f82e26af
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=guide+de+remblaiement+des+tranch%25C3%25A9es+setra In PDF document text
    • http://files.norwoodcafe.com/uploads/1/3/0/7/130776745/xegot-xakakuxuwopibod.pdfIn PDF document text
    • http://files.sunnyhillpreschoolinc.com/uploads/1/3/1/4/131453251/2e4567d.pdfIn PDF document text
    • http://punuf.carriekarnesfannin.com/uploads/1/3/1/3/131398452/29e9a083f8bae62.pdfIn PDF document text
    • http://rotot.j2academy.com/uploads/1/3/1/4/131407736/vuzoriwozepo_gunadedevuvu_xukadegatiba.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fc39a9c-daab-4db0-ab72-a811938163d3/76402232699.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbf500d3-e43c-4a49-9f05-5311990ee2ab/51945637184.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8bc90191-4a62-4232-b83c-db14522a9f37/danamemuluwejogerumes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/4145/6796/files/94291595167.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2949/8522/files/the_handbook_of_fixed_income_securities_eighth_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/1716/9819/files/99940935234.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6846/5053/files/pldt_wifi_hacker_apk_for_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/3709/7625/files/17178902752.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4008/5915/files/17350608579.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 4

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_off00005ff4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF4 5492 bytes
SHA-256: e0f6253d0147d152a6470ffb2b803ef987bce53a1063abca4b81a7e9b779aea6
font_01_sfnt_off0000722c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x722C 10892 bytes
SHA-256: 26344eff6d9b43ade560b99d8d23e7c13e9472953d3141864bcde5ec96ddef55

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