Malicious PDF — malware analysis report

Static analysis result for SHA-256 80799e6a9f054a2a…

MALICIOUS

PDF

74.8 KB Created: 2021-06-01 16:51:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 2cafddea50ea2b83543e7ab5fe4e11d5 SHA-1: 23911640a8ffc0d323f7a2836b47f56c4aaf8591 SHA-256: 80799e6a9f054a2ae5ae6d5a3e859499efc6b7dde75ca2cfa851f22df2136722
194 Risk Score

Malware Insights

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

This PDF document functions as a link farm, directing users to numerous external PDF files hosted on various domains, some of which are identified as disposable. The primary lure appears to be related to "how to hack minecraft windows 10 edition trial," suggesting a phishing or scam attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for distributing further malware or engaging in phishing activities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://infrive.ru/pbw?utm_term=how+to+hack+minecraft+windows+10+edition+trial PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4421768/normal_605b66097955d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366632/normal_5fc664b27cc7d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418367/normal_6038fd2dcbed6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457577/normal_5fe6ccbf8a708.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443588/normal_5fcf5f8072638.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473919/normal_5ffb6af389be5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486523/normal_5fd68028f3ef0.pdfIn PDF document text
    • https://xevogivuzu.weebly.com/uploads/1/3/5/3/135350373/vugisav.pdfIn PDF document text
    • https://xalofaba.weebly.com/uploads/1/3/5/3/135339869/kaxizerujurejakin.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460954/normal_5febfa96de364.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380083/normal_6052abf96a2b9.pdfIn PDF document text
    • https://nabumeludofava.weebly.com/uploads/1/3/4/3/134373896/2d3cf8.pdfIn PDF document text
    • https://jebupamix.weebly.com/uploads/1/3/6/0/136098333/4456749.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394066/normal_6058e00b2cb0f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380692/normal_602062320aacc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409246/normal_6019a2de52b3b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/aae3460a-f0eb-40be-ae09-9e122bfbc528/lijokujebapebixedisekoxo.pdfIn PDF document text
    • http://degenazi.pbworks.com/w/file/fetch/144433830/what_is_the_latest_samsung_tab_update.pdfIn PDF document text
    • http://naxenuve.pbworks.com/w/file/fetch/144447942/47025888138.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7de20146-aaa1-47bd-b603-93924b5293b0/17577264158.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f63d6257-3e69-468a-97a7-ae989a9d93d2/53219047450.pdfIn PDF document text
    • http://ganosidil.pbworks.com/w/file/fetch/144454764/53471406403.pdfIn 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_off0000e41e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE41E 5572 bytes
SHA-256: 5253b41604e77d997cd6de16414ad6ee2c21dbd8373794d136e55da1adf876e1
font_01_sfnt_off0000f6fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6FC 11268 bytes
SHA-256: d060cad727d201a9ddfe2938b655dfb69a3b067434fa3f48bef326aad41b4c1f