Malicious PDF — malware analysis report

Static analysis result for SHA-256 1536fc7623db548c…

MALICIOUS

PDF

50.2 KB Created: 2021-06-09 19:33:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 1dd23b0fae905a93dd4469e7416dc363 SHA-1: f71a34acab62f8e5f151067e3b8c7d7f95258048 SHA-256: 1536fc7623db548cf02becb09f083983dc6a11b7d3d08360bf70e52f6cd4be2b
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, with a primary lure related to 'Robux unused codes'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or a scam. While no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9328

Heuristics 4

  • 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
  • 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://coretry.ru/pbw?utm_term=robux+unused+codes PDF link annotation
    • https://pivamaxisogen.weebly.com/uploads/1/3/4/4/134481881/dbb17a8f8f3.pdfIn PDF document text
    • https://figiroxofidun.weebly.com/uploads/1/3/0/7/130740151/wogunex_zanov_naxibefigise_ragul.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446283/normal_5fd72e00143cc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372105/normal_5ff17cf95e564.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470696/normal_5fe37cd0e8d28.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366969/normal_6052bb07893e4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426271/normal_603c2ecd2073a.pdfIn PDF document text
    • https://vemifibu.weebly.com/uploads/1/3/4/3/134354414/9552592.pdfIn PDF document text
    • https://mululugasafes.weebly.com/uploads/1/3/1/6/131636627/8394821.pdfIn PDF document text
    • http://rumusapage.pbworks.com/w/file/fetch/144875994/1881476025.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/737ddc24-83a3-482f-ba11-e94f454fa4bc/nostradamus_hailed_from_what_country.pdfIn PDF document text
    • http://likanegi.pbworks.com/w/file/fetch/144513153/18529909142.pdfIn PDF document text
    • http://zixereves.pbworks.com/w/file/fetch/144663822/99022487793.pdfIn PDF document text
    • http://rirutatofiv.pbworks.com/w/file/fetch/144877392/xomibadetowukupokewi.pdfIn PDF document text
    • http://jisopubo.pbworks.com/f/45370680974.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b40b23d6-adb8-4dcf-8b9f-1768a668575a/bexebofefi.pdfIn PDF document text
    • http://banusiv.pbworks.com/w/file/fetch/144972861/rise_of_kingdoms_mod_apk_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e3acfe4-effa-48c6-bab0-0efeec251e5f/jogos_vorazes_1.pdfIn PDF document text
    • http://redelaw.pbworks.com/w/file/fetch/144587367/all_quiet_on_the_western_front_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/830bc49a-3075-4134-8936-70bfdf842b8e/dd_dm_screen_reincarnated.pdfIn PDF document text

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