Malicious PDF — malware analysis report

Static analysis result for SHA-256 59e0d99602e2a3bc…

MALICIOUS

PDF

76.5 KB Created: 2021-03-13 18:44:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 08ac3747beb82c7145721c07793769f6 SHA-1: 528a493c27650af610b3e4b76049e7fe0133b729 SHA-256: 59e0d99602e2a3bc1c2046d51d12099f6943dab6c039bc89197730860ee29176
126 Risk Score

Malware Insights

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

The PDF file is classified as malicious by ML and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs pointing to disposable domains, suggesting a link farm or redirection scheme to host malicious content. The document body, though heavily obfuscated, appears to be a lure related to 'Religions of the world judaism worksheet', likely to trick users into clicking the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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/wix?keyword=religions+of+the+world+judaism+worksheet PDF link annotation
    • http://negozio50sconto.info/diablo_3_eternal_collection_ps4_review_metacriticm7aap.pdfIn PDF document text
    • http://reduslimitalia-oficial.site/110276491958i27l.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470521/normal_604a61c9501a1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424341/normal_5ff4834dbe16a.pdfIn PDF document text
    • http://gojawufeki.getenjoyment.net/sims_4_patch_update_problems.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474746/normal_5feeee048fc45.pdfIn PDF document text
    • http://lewijufe.sportsontheweb.net/fapabeloviwared.pdfIn PDF document text
    • http://gedirobidepud.scienceontheweb.net/91359372053.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386842/normal_5fe3de7c71216.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458122/normal_6022398c4b684.pdfIn PDF document text
    • http://vixitatevejiwo.getenjoyment.net/keystone_rv_furnace_not_working.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/norozovijalu/muzejamuzani.pdfIn PDF document text
    • https://s3.amazonaws.com/sorogamat/xitimirisex.pdfIn PDF document text
    • https://s3.amazonaws.com/nasitevu/dibujos_de_caras_con_emociones.pdfIn PDF document text
    • https://9764c975-acb6-4bd5-a3ff-b1f4624bc9bc.filesusr.com/ugd/5bcb7b_1c779efd043d42a18b3b47d036cfc3f7.pdf?index=trueIn PDF document text
    • https://2e4d99de-9d37-4ce2-abd5-0bbccafdbe51.filesusr.com/ugd/33a2e4_d92067444c464c07901f89aa049d96fd.pdf?index=trueIn PDF document text
    • https://cef8af8d-7071-4339-ac50-fc417d371010.filesusr.com/ugd/a89196_45b999c5edd248ecbd80a1bd66ab0229.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jeduzizonox/bukuniwuwewevaniw.pdfIn PDF document text
    • https://e61e9f85-32c5-4861-9fd4-b89109084c35.filesusr.com/ugd/2e4eb4_2c2bfc8ab21844eaac53b0e9637dda0b.pdf?index=trueIn PDF document text
    • https://769966b8-4adc-437e-bba8-f198cf6e171b.filesusr.com/ugd/41a0b6_e2d24fec82494f37af389536feb06cd9.pdf?index=trueIn PDF document text
    • https://72858ab8-d36f-4bc2-b208-e5ec56e76d01.filesusr.com/ugd/3a4e0e_d75d59e8352a47a29b6c58b2bdf96b23.pdf?index=trueIn PDF document text
    • https://f07eb630-23ff-4298-a1df-d7940f1ba2dc.filesusr.com/ugd/097a5b_b55cf02e923e4e8ebc84a61a947f2234.pdf?index=trueIn PDF document text
    • https://8eefcaf3-52f5-4123-8be5-b1f0aaeea45e.filesusr.com/ugd/1d3654_6cb30d28a5ad45cfb5d3d7fe575dc351.pdf?index=trueIn PDF document text
    • https://4c5ad993-366d-4b3a-aa99-9b6f56583180.filesusr.com/ugd/01e791_50936edffea946509b6b1e8cc4f06bb8.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_off0000eb29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB29 5560 bytes
SHA-256: 5eb903573287b49002e3699041a22053b4c2b9c234e718d8a05f1fa9932fd874
font_01_sfnt_off0000fe01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE01 10616 bytes
SHA-256: 58736817fed5970e07a7adb0d1fe6251c2b05d4488c7fe6dbb5fadeb57d70009