Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f6c4cdc99e7d479…

MALICIOUS

PDF

48.4 KB Created: 2020-10-07 05:23:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 5b8c7d7ee726b42bdd0b55a1492244c7 SHA-1: bf82b5bc0d8cca829e164f6ddbb8591ef2c4b77b SHA-256: 2f6c4cdc99e7d47906a553448f9e8e600e42ec27fed041e2cf9e174c3fc20c9e
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://ttraff.me/pify?keyword=gathering+ffxiv+leve+guide In PDF document text
    • http://files.decormoreno.com/uploads/1/3/2/8/132814276/jojabes.pdfIn PDF document text
    • http://xetatisa.yogaaah.com/uploads/1/3/1/0/131070355/7565178.pdfIn PDF document text
    • http://rokan.trilogygardenclub.com/uploads/1/3/0/7/130776068/tomafoniw.pdfIn PDF document text
    • http://files.weichenlin.com/uploads/1/3/1/1/131164168/podimirexenuxetulo.pdfIn PDF document text
    • http://files.equestderby.com/uploads/1/3/1/4/131482882/kekixer.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/1/0431/2167/2356/files/likixivetejasololekofo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/0488/9758/files/57578103484.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2445/2254/files/evo_dog_food_replacement.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/1178/6912/files/what_is_a_young_female_goose_called.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5683/1395/files/16701318776.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/901e370e-809d-4644-90ed-4c15c0c89d69/gutobotawibidetab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1b9c829-0bf6-4cde-ad1f-6d740ce4f560/58317285052.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eca33fb8-4f2e-4b70-a556-599936eb45c2/gupesakebuzal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3425be89-e193-4869-bf90-14a21ca357dc/fovevidujuberiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb85a8f6-88ba-4880-9b31-d7f41f48a56b/tupoxizumojopeso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a3db70b-7356-4c78-92c4-6c80591dbd41/merefus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31333341-e206-41d3-8365-49efd83871af/65053016354.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/484eadd2-1825-4c97-9fa1-4eb32d448296/gisudunitobaguv.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_off00007fc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FC4 5148 bytes
SHA-256: 1521dd1b5736ddb0738de6b466cf31389fda53a6a7ed41e1cf895f9814c5d81f
font_01_sfnt_off00009151.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9151 10172 bytes
SHA-256: b56afb42941d6cd0ada397021e9aa4946e8f2cd5e271c427cf667aec871d26c3

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