Malicious PDF — malware analysis report

Static analysis result for SHA-256 64bdb2dae293a269…

MALICIOUS

PDF

37.3 KB Created: 2020-10-27 21:24:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: eccf94816ac74f197eb2ead2ec8e24bd SHA-1: ef581e3683364059bf52fb0529a9455ea596e944 SHA-256: 64bdb2dae293a2696846e35fafab3d249fdd69d4fd1f02c22e764f5bb0f22d0d
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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.link/123?keyword=18k+vs+14k+gold+reddit In PDF document text
    • https://cdn-cms.f-static.net/uploads/4407997/normal_5f969a6d8e5d9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369498/normal_5f94e03443c1c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367938/normal_5f87c7c28bf41.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403406/normal_5f9311de42f91.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402533/normal_5f94f7e23e5fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369508/normal_5f89bef8f0f78.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384645/normal_5f8cfcc72c0e2.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/baf936c9-d474-4350-a927-c742f174b176/moon_ball_pokemon_planet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e7c76be-489c-4eb3-ae06-ce4f62cef220/33773631258.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10a9f2a2-ad69-4481-9dfe-595512f1997a/venuxewisugufasimob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ab4d321-58a4-4d44-a99c-b302d3aa61d1/67805799702.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a670cfd9-6c7d-4917-8a0b-1b9671362a4d/murojofefufade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7263a2b-37f1-4672-b9fa-78c2acb025d6/63435704611.pdfIn PDF document text
    • https://s3.amazonaws.com/potofaw/introduction_to_boundary_layer_meteorology_stull.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/kewewanaso.pdfIn PDF document text
    • https://s3.amazonaws.com/jagux/kesudilewalikikij.pdfIn PDF document text
    • https://s3.amazonaws.com/nimuwet/balogh_bla_a_tudatalatti_tzparancsolata.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/pumikix.pdfIn PDF document text
    • https://s3.amazonaws.com/bupaxomu/14936277458.pdfIn PDF document text
    • https://s3.amazonaws.com/belopudevuzuza/63974921000.pdfIn PDF document text
    • https://s3.amazonaws.com/divexikav/jokuxoze.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/gaduradibazet.pdfIn PDF document text
    • https://s3.amazonaws.com/gixawetopoli/telecharger_magazine_burda_gratuit.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_off00005505.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5505 5144 bytes
SHA-256: 1c3655bcd52585e0560a5257504e3826214b9827a18ca05348470303d9c5c706
font_01_sfnt_off000066a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66A3 9784 bytes
SHA-256: 1652abdc5c0b372b0bd7749b10e69af6cf0ae46d9bee181667e675fe50bd318a

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