Malicious PDF — malware analysis report

Static analysis result for SHA-256 59070fcb94c7bc3b…

MALICIOUS

PDF

76.5 KB Created: 2021-05-01 21:45:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 78f9b5439476790a922f31f70450c19e SHA-1: 559c36f38af3bec87388c0b068b3abea9f49219d SHA-256: 59070fcb94c7bc3be4e65634f59546956f7862027027d959534790e8615ef6ec
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one specifically pointing to a suspicious domain that appears to be a redirector. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or to serve a second-stage payload. The document's structure and embedded links suggest it's part of a link farm designed to obscure the ultimate destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://seumenha.ru/strik?utm_term=oxford+dictionary+word+of+the+year+2019+hindi PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4454971/normal_5ff5339575299.pdfIn PDF document text
    • https://cdn.sqhk.co/jasurisunav/hgjOMOi/18173336737.pdfIn PDF document text
    • http://jugepawe.medianewsonline.com/coordination_compounds.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495039/normal_600e276293cae.pdfIn PDF document text
    • https://cdn.sqhk.co/mukujoripu/gexiekq/zombie_frontier_2_mod_apk_terbaru.pdfIn PDF document text
    • http://sijiwepi.mypressonline.com/jiduvipuxikakixefiw.pdfIn PDF document text
    • https://cdn.sqhk.co/lotivadafe/haQsJhb/photo_editor_change_background_color_online.pdfIn PDF document text
    • http://tapagigozi.medianewsonline.com/52710926463.pdfIn PDF document text
    • http://wonozudobitisog.scienceontheweb.net/gesozu.pdfIn PDF document text
    • https://cdn.sqhk.co/kagurase/v7igijc/lock_screen_windows_10_disable.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://b3a8b944-ddec-4d17-9b53-5a1c05c66d8c.filesusr.com/ugd/314503_1b3a8960a8994427b6f3dd10e6d891b5.pdf?index=trueIn PDF document text
    • https://8a6b9437-e7f2-49d7-8c24-351b272aa67a.filesusr.com/ugd/b18e4d_75b9df129a9f497bb20586ee9a199356.pdf?index=trueIn PDF document text
    • https://5071cc05-3fa2-46b1-b944-d2523ca4b51d.filesusr.com/ugd/62e2c1_c2209fedce314249b75f515471168b32.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b92cca0-c760-4bc4-b769-23ffaa1feb24/27744862280.pdfIn PDF document text
    • https://73e8eba8-f08a-4c12-987a-519a82e171c2.filesusr.com/ugd/19159f_e21de4870b05483cad123dc545d606be.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/afec06ba-6fb3-4124-93b8-6cc83b381018/5268680068.pdfIn PDF document text
    • https://3f740848-0e57-4b51-8596-564812021bec.filesusr.com/ugd/cbe17c_42be992f7e2b4b6bb07d1eb94e8717b6.pdf?index=trueIn 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_off0000e9e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9E7 5668 bytes
SHA-256: 19d3540816221b625b18a81899c0a11499e402677ab0e127255c624ce5747b59
font_01_sfnt_off0000fd57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD57 11096 bytes
SHA-256: 643c4892733b3918f4408fea9bf597123675dfd342f198c5bbcb63de2c844d32

Open this report in the interactive analyzer, or submit your own file for analysis.