Malicious PDF — malware analysis report

Static analysis result for SHA-256 6847c2cef314b79c…

MALICIOUS

PDF

36.6 KB Created: 2020-10-02 11:01:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: e3672c4b158b2e4fed97bcce8072efa9 SHA-1: ea7bb8cd66ccd04cdfa4574502c454cc614204d1 SHA-256: 6847c2cef314b79c8ce209115c3335f8c76e5995cfe38d7e95bd7fb9c066b234
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=arte+de+empezar+pdf In PDF document text
    • http://files.bookedwinmoses.com/uploads/1/3/2/6/132696483/b8f4bc1.pdfIn PDF document text
    • http://files.ay-visuals.com/uploads/1/3/0/9/130970009/0a1525f17b1e734.pdfIn PDF document text
    • http://mulexujo.2040thelanding.com/uploads/1/3/1/3/131398367/971431.pdfIn PDF document text
    • http://kodelasij.coastaltransfers.com/uploads/1/3/0/7/130775195/2235839.pdfIn PDF document text
    • http://files.admiredbuilders.com/uploads/1/3/0/7/130739631/7656532.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/1/0483/6963/1385/files/revetments_definition_geography.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/2379/7911/files/19245696201.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/9895/5684/files/26052400685.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb01f910-f112-4740-8cbd-c05bd12360fd/joxesat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5477e9c7-03c1-4ed6-9e0e-921c7d9afa31/bunazodafalor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b49b9575-7e79-4631-99a7-dd3acbd36551/10562515982.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4602496-cca6-41a1-8593-acb5a4a8d43f/63522626351.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c777fda-4b10-4c0a-a2fa-b6657a44810f/58573079578.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfd1d525-518b-4225-9996-3493fb3cc94a/58611004026.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38846a6a-9eb4-4869-845f-07cba14fcdcf/xitirubatezo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad264b4c-f196-42c2-8b0b-780499598fc7/juwopuvumikino.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 5

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_off00005071.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5071 5016 bytes
SHA-256: 8999098e1421f123acf7a197a215ab630bfd370f6291f69ce471414254573a61
font_01_sfnt_off00006174.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6174 10768 bytes
SHA-256: 87eaa14b5740d5d04acbea4ca15cd1c1f74b31975f847c91e34eb3ac00ccc8e5

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