Malicious PDF — malware analysis report

Static analysis result for SHA-256 1da39ff60e7ad311…

MALICIOUS

PDF

59.6 KB Created: 2021-02-26 08:27:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 3c1b6c5c296ddc3d58b0b50a554a445b SHA-1: 28f3253ae1add7e6939810b81cb30828c3e5ad0e SHA-256: 1da39ff60e7ad311338229112881b7397ca6cf1ca2faea8604356426dfb69025
222 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file contains multiple embedded links, some of which are invisible, directing users to suspicious domains. The heuristic firings indicate that these links are used to redirect users to malicious infrastructure, likely for the purpose of downloading further malware. The ClamAV detection and ML classifier further support the malicious nature of this document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8917

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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.
  • 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://crophysi.ru/award?keyword=fisher+price+newborn+to+toddler+portable+rocker+recall In PDF document text
    • https://lifalaril.weebly.com/uploads/1/3/4/8/134883644/divomuwotidiganili.pdfIn PDF document text
    • https://vogadebu.weebly.com/uploads/1/3/4/7/134723944/1236806.pdfIn PDF document text
    • https://jufozawuvinuxak.weebly.com/uploads/1/3/5/3/135326647/kosenabariwawowade.pdfIn PDF document text
    • http://mavidodi.iblogger.org/7763947160.pdfIn PDF document text
    • https://lowixuwegula.weebly.com/uploads/1/3/0/7/130775587/gebipavusagi.pdfIn PDF document text
    • http://gelchlen.fun/hallmark_channel_when_hope_calls_season_1domvr.pdfIn PDF document text
    • http://ig-supportcenter.xyz/kalimba_manualg1582.pdfIn PDF document text
    • https://fafafupoxojamu.weebly.com/uploads/1/3/5/3/135350358/1118613.pdfIn PDF document text
    • https://fegafedanopi.weebly.com/uploads/1/3/4/3/134311678/renitov_fovekili_vatamefadit.pdfIn PDF document text
    • http://viniveba.mywebcommunity.org/27421508204.pdfIn PDF document text
    • http://katipef.medianewsonline.com/what_do_the_bible_say_about_drinking_beer.pdfIn PDF document text
    • http://gekifek.scienceontheweb.net/gumetaxinabawidiz.pdfIn PDF document text
    • https://lepifokofufup.weebly.com/uploads/1/3/4/0/134018260/9543865.pdfIn PDF document text
    • https://mavakonagidesa.weebly.com/uploads/1/3/1/4/131483278/dd66a3007.pdfIn PDF document text
    • http://kiduxoz.epizy.com/wiketunadififusujoxofapo.pdfIn PDF document text
    • http://vogafaxusa.epizy.com/73609523214.pdfIn PDF document text
    • https://s3.amazonaws.com/jejulurowev/29781563565.pdfIn PDF document text
    • https://s3.amazonaws.com/patilawasu/fonodapaj.pdfIn PDF document text
    • http://zutugidod.onlinewebshop.net/25124288362.pdfIn PDF document text
    • https://s3.amazonaws.com/bisazabe/26174143103.pdfIn PDF document text

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