Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2e578ae8176540e…

MALICIOUS

PDF

76.9 KB Created: 2021-03-10 08:03:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 39c24d32cb3fc6de4ead424227bfc23c SHA-1: 111b4aad2786f904ce5f73f32b2f8fc269432ad0 SHA-256: f2e578ae8176540e51f13fd65c38eea0e666b0841d0e77c481db502c0cd06bfd
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing attempt. The primary URL, https://lozipotod.ru/award?keyword=aroma+gelato+and+waffle+lounge+menu+pdf, is presented in a context that mimics a menu, likely to deceive users into clicking through to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://lozipotod.ru/award?keyword=aroma+gelato+and+waffle+lounge+menu+pdf PDF link annotation
    • https://zawasofolebu.weebly.com/uploads/1/3/4/9/134902788/478937.pdfIn PDF document text
    • http://rozogididibusar.sportsontheweb.net/casio_ctk_2400_price_in_sri_lanka.pdfIn PDF document text
    • http://vonexalux.sportsontheweb.net/73885163601.pdfIn PDF document text
    • https://vowevabejera.weebly.com/uploads/1/3/0/7/130775986/kulotem.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490001/normal_6041bb06913dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470533/normal_5fd3d5498d704.pdfIn PDF document text
    • http://sazinoz.mypressonline.com/database_security_engineer_job_description.pdfIn PDF document text
    • https://luwimaxilonava.weebly.com/uploads/1/3/4/7/134772317/325ad7dcf0924.pdfIn PDF document text
    • http://rejorevubirobu.sportsontheweb.net/zizijexujazakegovegudov.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ffcd7f67-9b43-45c2-8e44-b15cca9583b8.filesusr.com/ugd/48bf55_dbb5599e46fe45c69e6e15563ab9a316.pdf?index=trueIn PDF document text
    • https://f8d82b49-d438-4da2-b906-f876cb6fe635.filesusr.com/ugd/12dc78_9beaaeb48695401a803412f5effef804.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bisute/al_fajr_surah.pdfIn PDF document text
    • https://s3.amazonaws.com/wegemebufojafak/78687533898.pdfIn PDF document text
    • https://9fb0fece-6c2a-4f8b-8ff1-5d9ea67f5ee7.filesusr.com/ugd/f6a907_892c3723b2604b169d87c494a91a3caa.pdf?index=trueIn PDF document text
    • https://8569cc17-8b2a-4187-ace0-95b0550b99f0.filesusr.com/ugd/d6eede_02b7bb794c504cdda5cb80aa35e055ad.pdf?index=trueIn PDF document text
    • https://721ea522-a1f6-4523-903e-24b3c8014629.filesusr.com/ugd/5a834c_fbc0f033d5394c0588a7d8081ba08a58.pdf?index=trueIn PDF document text
    • https://27475d5a-2981-497d-8cd5-0c310ef10f8b.filesusr.com/ugd/9cb927_9ccc6bcada6048a99756ec04891cd1e9.pdf?index=trueIn PDF document text
    • https://5984e891-aecd-43e6-866f-efdb297c9c35.filesusr.com/ugd/403565_0a7a41fa0df04c11ad6ad72bd51deba5.pdf?index=trueIn PDF document text
    • https://e57d8632-f742-4524-ada6-9cdf759d9f13.filesusr.com/ugd/b0cb2d_597d308b3c3a43c5b7dd24c01487f0ba.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_off0000f190.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF190 5264 bytes
SHA-256: 8e42228162110a122a1c0983b2f4268223129987b989683ed5ad71d00678070f
font_01_sfnt_off00010374.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10374 10176 bytes
SHA-256: 90a3c9dc6024a8cb34c1153bfbd2eee82d132ed7b12acd7d02fb26707df4f690