Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ebc4d384c89f610…

MALICIOUS

PDF

129.6 KB Created: 2021-03-26 07:46:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: fab736a2676c555389e8baed9661f7d3 SHA-1: a2c5ee539b713efcd03bcc4e5d15759351a6b1ff SHA-256: 8ebc4d384c89f61038172948d01adc722eae3092c709d44bc0c036af28341020
184 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9753

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
  • 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.
  • 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://nipisod.ru/award?keyword=livreto+acgih+pdf PDF link annotation
    • https://bufenosesan.weebly.com/uploads/1/3/5/3/135329861/duvujazeva.pdfIn PDF document text
    • https://cdn.sqhk.co/retakabif/ZhhT4QC/vitamin_d_deficiency_causes_hair_loss.pdfIn PDF document text
    • https://sepetumeba.weebly.com/uploads/1/3/4/6/134601334/18f2f5f60774eb1.pdfIn PDF document text
    • https://bejokezogakuji.weebly.com/uploads/1/3/2/6/132695802/6351890.pdfIn PDF document text
    • https://cdn.sqhk.co/puzadowoke/drd93EZ/90098953108.pdfIn PDF document text
    • http://riwotivadejud.sportsontheweb.net/does_adverbs_end_in_ly.pdfIn PDF document text
    • https://jadufebifov.weebly.com/uploads/1/3/4/6/134627690/vatidesovug.pdfIn PDF document text
    • http://nunixofu.22web.org/diviser_un_en_plusieurs_parties.pdfIn PDF document text
    • https://cdn.sqhk.co/fejisedetu/3Hsda4b/mudding_and_taping_drywall_patch.pdfIn PDF document text
    • http://netopodimamo.mywebcommunity.org/1_to_10000_numbers_in_english_words.pdfIn PDF document text
    • http://talezoruvaje.iblogger.org/mejusebapo.pdfIn PDF document text
    • https://xojozojejaxito.weebly.com/uploads/1/3/4/8/134866115/cda779e914d0e.pdfIn PDF document text
    • https://nujuwededewomoj.weebly.com/uploads/1/3/4/3/134305400/9110816.pdfIn PDF document text
    • https://cdn.sqhk.co/digubamot/e6JMWge/sigifovolikixowisuzi.pdfIn PDF document text
    • http://xoxinazur.rf.gd/application_layout_template.pdfIn PDF document text
    • http://xapimiwosusuv.epizy.com/nepukiporojezediberiw.pdfIn PDF document text
    • http://dowafirowelumex.atwebpages.com/ziledojazerozal.pdfIn PDF document text
    • http://soxarigur.myartsonline.com/15850477582.pdfIn PDF document text

Related samples 8

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