Malicious PDF — malware analysis report

Static analysis result for SHA-256 00d4127305cec2be…

MALICIOUS

PDF

89.1 KB Created: 2021-05-06 03:50:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 216969d878e807064cfcb35bd8c1a4a9 SHA-1: 7fcef72440820451396f7c377f5a71d5f30dc6bc SHA-256: 00d4127305cec2bee00a418f4a5ca4a4045487b0a54011da843be31271d2f907
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains a large number of external links, with one heuristic specifically identifying a 'PDF_SEO_LINK_FARM' pointing to 'http://jisunopesaluzi.atwebpages.com/23639904767.pdf'. The presence of embedded URLs and the overall structure suggest an attempt to redirect users to potentially malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://golowaki.ru/strik?utm_term=lawrence+c.+evans+partial+differential+equations
    • https://cdn-cms.f-static.net/uploads/4422144/normal_60393d7517d27.pdf
    • http://lenugaguv.medianewsonline.com/4943778149.pdf
    • https://fojaxekixuwid.weebly.com/uploads/1/3/4/7/134743661/a359559d4c4.pdf
    • http://rumurel.mywebcommunity.org/777_aleister_crowley_espaol.pdf
    • http://likedizar.medianewsonline.com/asia_political_map_download.pdf
    • https://cdn-cms.f-static.net/uploads/4402503/normal_5fe95cf6dd2a1.pdf
    • https://lapadodipelij.weebly.com/uploads/1/3/1/1/131164402/40cff4f.pdf
    • http://sibatike.getenjoyment.net/angle_addition_postulate_practice.pdf
    • https://static.s123-cdn-static.com/uploads/4497348/normal_600927fecfbf3.pdf
    • http://taxarigi.sportsontheweb.net/25747035416.pdf
    • http://pifafixejizigu.scienceontheweb.net/ignou_assignment_2020_19_solved_free.pdf
    • http://nubuxeki.scienceontheweb.net/zedevoboxazeburukino.pdf
    • https://cdn-cms.f-static.net/uploads/4419192/normal_6062f2b1914e9.pdf
    • http://xizapataruxeku.mygamesonline.org/dekulenevepoda.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://jisunopesaluzi.atwebpages.com/23639904767.pdf
    • https://uploads.strikinglycdn.com/files/827076c1-5685-4d83-b01e-59e7a8cc55d5/dekatexaja.pdf
    • https://uploads.strikinglycdn.com/files/e32474a4-06ea-4832-ba5d-aa15e7f0cb69/ford_3000_tractor_parts_manual.pdf
    • https://uploads.strikinglycdn.com/files/6f3f54a3-a111-417a-914a-6f9f0068f45b/nesco_6-quart_electric_roaster_oven_with_glass_lid.pdf
    • https://uploads.strikinglycdn.com/files/e43b8ba2-aef9-45c7-8100-5b420fe20f4c/onto_theological_synthesis.pdf
    • https://35b1a599-9f45-4897-82ce-59a931fc5495.filesusr.com/ugd/daca0d_9fc98a2a31c84bafbba871e9c6da511c.pdf?index=true
    • https://uploads.strikinglycdn.com/files/2d49c59a-798f-48cc-8402-84408e41e191/ada_mp_1_mod_4_mkii.pdf
    • https://df4002df-ed14-466c-b758-10ced248c840.filesusr.com/ugd/3b03e6_aa58b327dfb24963b752aadefc26b46b.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011bde.bin
f1979047dedc6016db7f76c1d97acb57ae7c5e6cef977d8bde97cd75d68bf54a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11BDE 5400 bytes
font_01_sfnt_off00012e6c.bin
850723acb19cf57c01207f378cd629266ac8a92875c08b7373b6371c2a76deec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12E6C 12808 bytes

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