Malicious PDF — malware analysis report

Static analysis result for SHA-256 60a2531f23a03bcc…

MALICIOUS

PDF

109.6 KB Created: 2021-06-07 05:52:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 75a8c6447267c946d89c90ecb8a03ff7 SHA-1: e07138d5ef4681652aba254d9aba13dab2718301 SHA-256: 60a2531f23a03bcc4256e13190dc4954573a754f6aeb22dd7d47ccbba6072749
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically identified as a phishing trojan. It contains numerous embedded URLs, with one prominent URL pointing to 'allytemp.ru', suggesting a phishing or malware distribution attempt. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the PDF is designed as a link farm on disposable hosting, further supporting a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9361

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://allytemp.ru/pbw?utm_term=cutting+edge+intermediate+vocabulary+book+pdf PDF link annotation
    • https://static.s123-cdn-static-d.com/uploads/4450003/normal_60b2b28f14232.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459324/normal_6034f945cef48.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383687/normal_5fdfc61e2558f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375891/normal_605d8079e5574.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500889/normal_600f9006b644b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405639/normal_600b02030b269.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443624/normal_604f9e713ceac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483075/normal_6055c88c7105d.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4393641/normal_60b05e262b2f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456999/normal_603d73e41eb3e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498348/normal_602a101173f73.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473656/normal_60220503d2b18.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485929/normal_6003519a565eb.pdfIn PDF document text
    • http://tirotibixup.pbworks.com/f/how_to_get_train_ticket_with_pnr_number.pdfIn PDF document text
    • http://medodadepud.pbworks.com/w/file/fetch/144646431/sigifavedef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4162b5e2-925e-46c5-a41c-756cd17c5809/62901889.pdfIn PDF document text
    • http://zufogopojut.pbworks.com/w/file/fetch/144502941/list_of_figure_of_speech_with_examples.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70e5097e-a859-4d91-9b49-aa577fb37fc5/13980498714.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1fac793-dc30-4c07-8960-318972693d88/cuanto_es_30_mililitros_en_cucharadas.pdfIn PDF document text
    • http://xedidovetaw.pbworks.com/w/file/144411246/how_do_you_change_your_voicemail_password_on_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1dc84297-2c22-4bd8-abab-257a478b23bb/xudipifiluliwekofewep.pdfIn PDF document text