Malicious PDF — malware analysis report

Static analysis result for SHA-256 94c019a98dffefb2…

MALICIOUS

PDF

95.2 KB Created: 2021-03-16 15:26:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 68dc6cdcf672904f9cc5ea4fd23b8d27 SHA-1: 48f916f7ea6451e2f53d6859d42b50ae7e5804cf SHA-256: 94c019a98dffefb218b370d78eaba7f337c8a94e2e6e7e30cc68a518e84e792a
126 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a link farm and has been flagged as malicious by ML classifiers and ClamAV. The document body, though heavily obfuscated, appears to be a lure related to 'no man's sky best ship type', directing users to a suspicious URL. This suggests a phishing or redirection attack, likely intended to deliver a second-stage payload or lead the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://mezovuduw.ru/wix?keyword=no+man%2527s+sky+best+ship+type PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4446917/normal_5fd18d2c70362.pdfIn PDF document text
    • http://kokawerawofovi.iblogger.org/cd4538bcn_datasheet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366311/normal_603195a7a3a8e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458389/normal_60315b972544e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425533/normal_5ff2791a4f115.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4505102/normal_601b527da417f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://7abbf572-6989-4614-8246-9d5ba34cd238.filesusr.com/ugd/af841b_896bb2b1ff5249e8aa8b0b914aa702a0.pdf?index=trueIn PDF document text
    • https://ee6bc897-aa08-459d-b6e6-b1b1d69fcba1.filesusr.com/ugd/7ba596_73dd940174f949c09f94c8bd18c4bbeb.pdf?index=trueIn PDF document text
    • http://ribaxekag.epizy.com/vepopasisufu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68be4778-19a4-4df3-a7ac-613aa5d1a352/how_long_is_interior_design_course.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d191898-921f-42ed-80e7-ecc07a4de567/joxegajoxufaviwaxir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88e0aa4e-45d6-4d67-9c4c-c67cd8eaa932/how_do_i_cite_a_book_in_apa_7th_edition.pdfIn PDF document text
    • http://padamexo.epizy.com/33133713133.pdfIn PDF document text
    • https://5c2df1de-05ea-4e17-9aa3-38adc7ce3153.filesusr.com/ugd/ddd609_a6164079641c43899ecab5a4263df6cd.pdf?index=trueIn PDF document text
    • https://46a1ac71-481d-4a85-b709-d40f3a189542.filesusr.com/ugd/143c98_ad794b6e7b0c4ac89ab1a5fafb0f968f.pdf?index=trueIn PDF document text
    • https://98350ace-7ac4-4f38-a9d9-579fdad8050b.filesusr.com/ugd/9b2d9b_9484996f3b1d4e5ea2f07728f63368a5.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b11df6d4-640c-4b6d-84ef-3ee7a894a283/jodimixizodawesutodo.pdfIn PDF document text
    • http://nuwikomoxiso.epizy.com/3675758522.pdfIn PDF document text
    • https://01d67eed-50ba-4ccb-8f82-c1581f7ed07e.filesusr.com/ugd/e3325f_089499a6f4ab4b7da7b4d3798af47927.pdf?index=trueIn PDF document text
    • https://7ae52be2-ba3c-41fb-8935-29281088223e.filesusr.com/ugd/affaa6_14b59e6e73094e11b4bd5e702a6ded52.pdf?index=trueIn PDF document text
    • http://watijosanowo.epizy.com/lojumekanesugina.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_off00013603.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13603 5240 bytes
SHA-256: 02a2895e02ac50d11d4503d921d64d3b32f520b7c519944edfcefe9557cf7c94
font_01_sfnt_off000147c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x147C0 11136 bytes
SHA-256: a77cf1a38981b110008daab194377a3b498184d7d641a11f91d081269cb7c9ab

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