Malicious PDF — malware analysis report

Static analysis result for SHA-256 347b11db7ce70a33…

MALICIOUS

PDF

48.9 KB Created: 2020-11-08 15:53:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 68802a8a908d1a33f6dc147ab829b795 SHA-1: 6642a6af06e5743132a375d5c5a45282641996d2 SHA-256: 347b11db7ce70a33cdc6d757a7079b251029b93c087fb4a444671e2b41432ae3
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://traffine.ru/aws?keyword=phor+black+ink+crew+daughter In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368998/normal_5f890acf82ad1.pdfIn PDF document text
    • https://gozofuma.weebly.com/uploads/1/3/0/8/130874065/papelitosideve.pdfIn PDF document text
    • https://wirukibit.weebly.com/uploads/1/3/0/9/130969322/9699126.pdfIn PDF document text
    • https://dejuxowiku.weebly.com/uploads/1/3/0/7/130738850/bilekazokipo.pdfIn PDF document text
    • https://werijininen.weebly.com/uploads/1/3/4/6/134635560/notaguze.pdfIn PDF document text
    • https://lupolaluxu.weebly.com/uploads/1/3/2/6/132681144/xajupitugewolebo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446016/normal_5fa1ef5bac3f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369308/normal_5f9f28e9e91bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372740/normal_5f98f7592c533.pdfIn PDF document text
    • https://kinumonitebira.weebly.com/uploads/1/3/4/6/134605003/ebe3cc0c15e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://manetomimexa.files.wordpress.com/2020/11/lugotorizereziwatogukomak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b0d3e31-e502-4bed-9302-dc02ebbc3349/ms_flow_email_id.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A92 5320 bytes
SHA-256: 8adac4b57cc81a03ec41eefbbe87cd38fcb94c6d77a702c104e82d54bd6f7454
font_01_sfnt_off00006caf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CAF 5460 bytes
SHA-256: 74b15eaadfd9254003318c79f14b93e0d0bee47dc47a25f530afbeaa17c56cba
font_02_sfnt_off00007c17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C17 10412 bytes
SHA-256: 754b95f9c8441b7403a111f4ece7f7ecad88868d40a12346259cdc6564258999
font_03_sfnt_off00009ff3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FF3 16496 bytes
SHA-256: d5521ffae43aafbc6258d2621eed769d6501bba17361583028f90a0e155fca8f

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