Malicious PDF — malware analysis report

Static analysis result for SHA-256 df3e6bcc3d3b5c2d…

MALICIOUS

PDF

39.8 KB Created: 2020-10-11 01:29:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 6e0d5eee1fcf6376705e9bbaf0618bcc SHA-1: 3d3b3b21df77dd052fc067e94d49dc1c42c61376 SHA-256: df3e6bcc3d3b5c2d0b3c2e3993d2223d82abf8785c9e390d756174edee259030
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://ggtraff.ru/pify?keyword=katarina+guide+s5 In PDF document text
    • http://files.kirkplayers.org/uploads/1/3/0/9/130969761/4836061.pdfIn PDF document text
    • http://files.marcietelander.com/uploads/1/3/1/3/131383764/6ebaf4bdda.pdfIn PDF document text
    • https://site-1041922.mozfiles.com/files/1041922/89825764992.pdfIn PDF document text
    • https://site-1042181.mozfiles.com/files/1042181/sujisoza.pdfIn PDF document text
    • https://site-1036640.mozfiles.com/files/1036640/91592847605.pdfIn PDF document text
    • https://site-1037033.mozfiles.com/files/1037033/65778605667.pdfIn PDF document text
    • https://site-1039730.mozfiles.com/files/1039730/78463934902.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/355e1afb-9514-4909-94e3-c00582f8974e/fipotonowuluguvunulotiwul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be32c977-38cc-4426-aaaf-38d267fe65fb/dorelujigewab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7f23e7f-b323-46bc-8a7c-63d2b3c7ca99/47831098708.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eabd69cd-99be-4754-9997-022061f01d07/kazevaxifewofitonotivotox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5cedb812-fa88-4b4e-87ee-57a5750c2a1e/wenesida.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5669749d-a8d6-4554-bc72-8b6b1e186448/mozasimilisig.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_off00005e43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E43 5056 bytes
SHA-256: 8e315a843e11578ba371ca0f573493fafd7d99af660bec44ee85039c0407c9c4
font_01_sfnt_off00006f87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F87 10156 bytes
SHA-256: ae9dcc83795ff776505cef721ec8467396ce133977a84c5de5d3a329c28c0062

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