Malicious PDF — malware analysis report

Static analysis result for SHA-256 72e0d440562f1689…

MALICIOUS

PDF

44.0 KB Created: 2020-11-01 22:29:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 89d5273039666680483a714866e7a1f9 SHA-1: 0488af236257745c4c5e3d23f83023dd12a5812b SHA-256: 72e0d440562f1689b44ec9a359f0882b4c0ebe1fd923b573258bc68b24430dc9
94 Risk Score

Malware Insights

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

The PDF contains a link disguised as a giveaway, which is a common social engineering tactic. This link, 'https://ttraff.club/123?keyword=hoverboard+giveaway+2020', is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness, supporting the conclusion that this document is designed to lead users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://ttraff.club/123?keyword=hoverboard+giveaway+2020 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4386080/normal_5f9e6cbab1bb7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366982/normal_5f8d63fc6d1f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372104/normal_5f90bb75798b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403947/normal_5f91631742c6e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386334/normal_5f8fe31e41b6f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424689/normal_5f9c1a66e6dc9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413019/normal_5f982e1bb6269.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376359/normal_5f90953024a81.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381973/normal_5f9248cbe4f59.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bejexe/sopere.pdfIn PDF document text
    • https://s3.amazonaws.com/kuboki/vibewatakigerukikikuku.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/synthesis_and_secretion_of_thyroid_hormones.pdfIn PDF document text
    • https://s3.amazonaws.com/matogapibelifiv/daberidikapiwifakilebagow.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/les_orientations_du_def_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/jexijer/gazikipunu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db3fdd16-0083-455a-b24a-7241a5543f14/vabof.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_off00006b8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B8B 5412 bytes
SHA-256: 95116ef3cfdbd0b2041115a1cdb4dda2527a981c383318a236ca7c5e834c29f8
font_01_sfnt_off00007e18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E18 10972 bytes
SHA-256: 1a7598056c1186389f1690e9f82ff450e7ee49e9d824fbac9a55bffb6d4a33d2

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