Malicious PDF — malware analysis report

Static analysis result for SHA-256 59822271fb8f728e…

MALICIOUS

PDF

73.3 KB Created: 2020-12-03 01:56:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: edd7c704f96e65c92d8f059829a9eed9 SHA-1: 16c7e99d09ce84c05a4138c0d15e41b17fb8e13d SHA-256: 59822271fb8f728e3be14a2b88836033ecbc21252401c921af54a32ef60905e7
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/strik?utm_term=worst+person+in+the+world+at+fortnite'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious URL strongly suggests an attempt to lure the user to a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 3

  • 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.
  • 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://gettraff.ru/strik?utm_term=worst+person+in+the+world+at+fortnite In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368237/normal_5f91d7616df36.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://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdfc0d3570fb44d1c927e5/1606286352086/what_direction_am_i_facing_at_night.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbfd18111f6a419847f67ca/t/5fc23360cb3e0f5771996a97/1606562658886/nijesexudibu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe1d8608845d092452ebf2/1606294919235/pre-marital_counselling_guide.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2a2022e34347c704f3ef4/t/5fc65b89f8cdb769c6bcba3e/1606835085887/18690529192.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf412b474932ca266b772/1606218770648/85360921481.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e4e1164-378e-41c1-9661-2381a233710c/jeet_kune_do_lesson.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc54f005bcb0228a29fb6e5/t/5fc60392f3de5e49b533dd9c/1606812562888/zigofajoveri.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c44749a-e1db-43e9-8507-875943d9f4ff/bogozewafiwusat.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc3a7a211f6a4198496ed50/t/5fc7ccdc8927470b95c69354/1606929628519/teppen_wiki_jp.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e0f3f7cf8c75402ad020/t/5fc1b036f3de5e49b5a3dbca/1606529078949/valigisolonelapujoxuragar.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d574.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD574 5020 bytes
SHA-256: ba4ac8a8530e2f866b743d9a5cfb012693423051c2d5c98b1213496386309418
font_01_sfnt_off0000e690.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE690 10612 bytes
SHA-256: bbd46fb4fcfa9803ec5af2cc4c8e117dabcf184210f858131a178394d1ee7689
font_02_sfnt_off00010a93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A93 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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