Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad2b11a645aff5bc…

MALICIOUS

PDF

51.0 KB Created: 2021-05-06 18:04:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f649aafb35f315954befde6f31a45b44 SHA-1: 18d931d3177afd9b997e529649ef7903bd9c2021 SHA-256: ad2b11a645aff5bc1721b512450e9cb72999d9999561434b0a62277c11d4f7ae
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious by multiple heuristics and an ML classifier, indicating a phishing or malware distribution attempt. It utilizes a screenshot lure, presenting itself as a benign image to entice users into clicking an embedded link. The document contains numerous external URIs, suggesting it functions as a link farm or redirects to malicious content, likely for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9372

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 50 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://golowaki.ru/strik?utm_term=dyson+cinetic+big+ball+brush+bar+not+spinning
    • http://degifutuv.scienceontheweb.net/tugowigijawimabogigawar.pdf
    • http://serovakarara.mygamesonline.org/totowowofedoruwesiladi.pdf
    • http://vurujupafowutox.mypressonline.com/equity_alarm_clock_model_30022.pdf
    • https://static.s123-cdn-static.com/uploads/4451940/normal_5ff87dbcaaccf.pdf
    • https://static.s123-cdn-static.com/uploads/4369506/normal_5ff03cbb0a69b.pdf
    • http://mitatizizuje.mypressonline.com/ophelia_madness.pdf
    • https://cdn-cms.f-static.net/uploads/4393898/normal_6054022a3eaec.pdf
    • http://virujurarajilef.getenjoyment.net/ielts_listening_and_reading_answer_sheet.pdf
    • https://cdn.sqhk.co/rijomawonuj/ogdidWl/vuwijiwewoxusul.pdf
    • https://cdn.sqhk.co/jukelifawap/gh7jahc/texisewi.pdf
    • https://static.s123-cdn-static.com/uploads/4379723/normal_5fca32d43ba96.pdf
    • https://467375c7-a7a6-4806-a9b7-892c2a528f89.filesusr.com/ugd/911174_eaaf10e3d9054a14a5f7411462dac771.pdf?index=true
    • https://uploads.strikinglycdn.com/files/c4ef675f-c918-4e95-9512-2cc2af54a9ea/68698182578.pdf
    • https://s3.amazonaws.com/dojivewobasuval/mojusesarawexewafakamu.pdf
    • https://uploads.strikinglycdn.com/files/666a3fc0-7d17-4d38-8189-0e7ba97223d6/dizurukage.pdf
    • https://s3.amazonaws.com/kovozenamofox/94816099203.pdf
    • https://f37c3615-20b0-4e70-b1e7-2acf34113780.filesusr.com/ugd/1e533a_a60e7a6b30fe4d8fa6c7160107cc42d3.pdf?index=true
    • https://s3.amazonaws.com/tomamujuf/56251368510.pdf
    • https://s3.amazonaws.com/fojaxexino/fenudeborudegomubunapur.pdf
    • https://ed0f7819-48b4-4c0d-9119-93de03d81b9c.filesusr.com/ugd/e481ce_2af9b19333cd4faea38996458962249b.pdf?index=true
    • https://uploads.strikinglycdn.com/files/17a066a5-8758-4093-92d2-bcfb10ef9b08/11887659354.pdf