Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cc653646fc5d294…

MALICIOUS

PDF

77.4 KB Created: 2021-03-30 09:00:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: e12861ed920d1678808cf97d8d63c18f SHA-1: f73924db1f8fee6ef007c0d1158e31bf372a25d4 SHA-256: 8cc653646fc5d294509ed6abf57cb2391d2cb80433501839927a9a46f0f5622d
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan-like behavior. It contains a link farm with numerous external URLs, suggesting an attempt to redirect users to potentially harmful websites. The primary malicious URL identified is soxebez.ru, which is likely part of a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

Heuristics 6

  • 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 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.
  • 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://soxebez.ru/award?keyword=hallelujah+easy+piano+pdf PDF link annotation
    • http://bexixibeguben.sportsontheweb.net/jurnal_patofisiologi_aterosklerosis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500187/normal_601f14368dfaa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366652/normal_604ba159ddd2a.pdfIn PDF document text
    • http://rotukefune.getenjoyment.net/senaxidamodikejebuzixur.pdfIn PDF document text
    • http://tevutubiwij.getenjoyment.net/2897261655.pdfIn PDF document text
    • http://vimabanu.sportsontheweb.net/gejim.pdfIn PDF document text
    • http://tawaguf.scienceontheweb.net/vovazo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372371/normal_5ff64f15052f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372076/normal_605b3631a8b27.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://1801fa0f-56e4-4894-8452-b8e06651d4be.filesusr.com/ugd/868401_847d1b0c567047c191c84a5c717c2784.pdf?index=trueIn PDF document text
    • https://1eb42bdc-3da6-4b32-b75f-4382f1721f8e.filesusr.com/ugd/35474d_84729efb8a1148fc9a34fc2bc00f4875.pdf?index=trueIn PDF document text
    • https://e6676b24-921d-4f57-8fca-beda98688f3c.filesusr.com/ugd/144d27_50bcbfdd78424f0c8d0375da3c817235.pdf?index=trueIn PDF document text
    • https://e49cd12a-7e53-4a25-9f98-ae37b5ff2e44.filesusr.com/ugd/35dc59_6124e4739d4d4268ab317b0bac2c357a.pdf?index=trueIn PDF document text
    • https://34e2f0dc-0077-42bd-a047-efa2502e92af.filesusr.com/ugd/8a05ec_fdce5afcb1644d7fb42820b0fcf2229d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wujodibu/suzuki_boulevard_c50_service_manual_free_download.pdfIn PDF document text
    • https://43a2ba88-5de9-465b-b95f-6a4d82f2d06e.filesusr.com/ugd/dcbeda_609efca106da49d58d306db9273659fc.pdf?index=trueIn PDF document text
    • https://123949be-7110-4ba3-a240-a7df06fb38ce.filesusr.com/ugd/80fd5d_2833a73b999d418e94bcd9e54978fcc9.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tesotiwapax/80848126594.pdfIn PDF document text
    • https://s3.amazonaws.com/fukezavazuj/l_accord_de_paris.pdfIn PDF document text
    • https://97a45c9e-1ab5-462a-bfe2-fded34b9a8b9.filesusr.com/ugd/b50c55_977f044ee87146eb8876b592cee84482.pdf?index=trueIn PDF document text
    • https://d17f4099-ecc1-42b1-9c73-51521793457c.filesusr.com/ugd/4a2613_5f28b0ed8894417cb6245eeba83b22e7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dofufiri/lagu_cinta_luar_biasa_cover_wapka.pdfIn PDF document text
    • https://s3.amazonaws.com/zusevamasor/technivorm_moccamaster_grinder_review.pdfIn PDF document text
    • https://9e2bb560-353e-4f5d-a08b-1363560edab4.filesusr.com/ugd/6c032c_8932f8b1b2dd43ddbb83d184b38dacc2.pdf?index=trueIn PDF document text
    • https://6c9aa500-f8d9-42a6-b8a4-5b3c562bbfc3.filesusr.com/ugd/543886_d04984b457f240b59e52190778bfe4b1.pdf?index=trueIn PDF document text
    • https://c7bff75e-0a19-4817-9d47-fca4cf08161b.filesusr.com/ugd/3b6424_637c3d7e1f7d4e7abdbdc2923b0b1fe9.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_off0000ede3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDE3 5172 bytes
SHA-256: 1e7eba244b705853abc71d3e177c8ff55f486d0639db8dab53d6126afa7975a3
font_01_sfnt_off0000ff8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF8E 12056 bytes
SHA-256: e7b6beeddd7192e12857f4c7457bc3d8d2c480d0776f0ffeac47dab9661e4e33

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