Malicious PDF — malware analysis report

Static analysis result for SHA-256 941e98cc72379ec7…

MALICIOUS

PDF

57.7 KB Created: 2020-10-16 19:32:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 4e6896e149c1aeaf8dff2d900f5b954a SHA-1: f587d2171e7cb2a258b8915ee559f3b89a82c1c5 SHA-256: 941e98cc72379ec76b1d96a37021203b769a5b2b9c9fc7705a2eb93b155b6212
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://ttraff.link/123?keyword=pes+2020+mobile+hack+mod+apk In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366952/normal_5f895e75ac6b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372086/normal_5f89c6bfba61f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365606/normal_5f875a60c8d06.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365562/normal_5f897b8f75567.pdfIn PDF document text
    • https://gewosawoma.weebly.com/uploads/1/3/0/7/130739201/9947158b656.pdfIn PDF document text
    • https://vupimolafi.weebly.com/uploads/1/3/1/3/131398504/wegus.pdfIn PDF document text
    • https://javezevefumutew.weebly.com/uploads/1/3/2/7/132740470/pudokigoweweg_fejokusek_samiforitupavip.pdfIn PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/wijigomofiweb_lotitosede_jukis_dirum.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/1867598.pdfIn PDF document text
    • https://wetuxabo.weebly.com/uploads/1/3/0/8/130873937/kosomosob_gevodiwafapoja_bebafa_warerepufiw.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/2122744.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/78c766a3-a89b-4b02-ab28-e7f6a1f2d156/18301159309.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2db5efe6-66d9-46bb-9946-4e265a4b16e7/tiviwedalejuzofepajom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0420c559-d7ad-4489-b47f-7a6bfc2a5aa1/zijapexa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97f66a87-d349-48c8-b348-f5be08b5e62c/89064956504.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68d3822f-2c1e-4ce7-9fb8-d7d8e0b55d82/nemajifu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6f7a748-2322-4984-8808-29780c64e7c0/xejag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a1c00da-c304-4636-ae64-e37fc51f77ed/85517626405.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/828a0ba9-84a4-44ea-9492-0c3341042cf1/62621557739.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e0d83d9-9b1a-4343-8979-7add5ae787e6/jugilusupovefamajuki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be8dc9bc-3655-4705-937a-0c2c9776824a/jomube.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd49357a-c923-49e5-9b03-6bf8471569c8/31155893678.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006cc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CC4 3068 bytes
SHA-256: ffa6d1247680663fa9f5922a498e890572346a808ed452c4145895fb9d2309d2
font_01_sfnt_off00007789.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7789 5696 bytes
SHA-256: 978cc167f5c2d4c22162cc4c75410b97c71651e3440ce7e746f0c91e5df5b2fd
font_02_sfnt_off00008ab9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AB9 4380 bytes
SHA-256: bf80e9f157e0e4c2fdd26ba269074cb543c05849e544a5101cda334d6280fbe5
font_03_sfnt_off00009b04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B04 10980 bytes
SHA-256: baa263750b8216fa01216871a618d9e470133586ad1768fd984e7f66831f6384
font_04_sfnt_off0000c0cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0CF 16904 bytes
SHA-256: 926b20d7d968b9cf54a6da93f96dc24ae9842e8e57040b5520fb3177c7dc6fe7

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