Malicious PDF — malware analysis report

Static analysis result for SHA-256 15fcfd944c9076c7…

MALICIOUS

PDF

58.2 KB Created: 2021-03-20 06:20:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 478fcb4020a79ad982386665f65c3c63 SHA-1: e36290b12d7eb43f313c6bcc2c81de388ee4eb67 SHA-256: 15fcfd944c9076c7fa72c87c382d6928fb1b3b817212f7a87ac091b67db45346
124 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 0.9945

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://jacksth.ru/strik?utm_term=plantronics+voyager+pro+uc+b230-m PDF link annotation
    • http://warixedivukinat.mygamesonline.org/introduction_to_data_science_rafael_a._irizarry_solutions.pdfIn PDF document text
    • https://gujejedadun.weebly.com/uploads/1/3/1/3/131398181/e9298237cf.pdfIn PDF document text
    • http://jekenufakewe.mypressonline.com/amar_asom_news_paper.pdfIn PDF document text
    • https://kajubogoxin.weebly.com/uploads/1/3/0/9/130969430/1860057c46064.pdfIn PDF document text
    • https://pufoxufuzevelo.weebly.com/uploads/1/3/4/4/134486621/kujipusur-bixetevobiditaw.pdfIn PDF document text
    • http://triple-doska3.club/zefupetesajizum56s1u.pdfIn PDF document text
    • http://botanilix.mygamesonline.org/87080427619.pdfIn PDF document text
    • http://joblanc.xyz/46276086299v64xa.pdfIn PDF document text
    • http://kvyovk.xyz/chicago_bulls_red_uniform3yu7t.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4091fd61-1ecb-4217-91d2-7fdc5e70eb8e/mufuroveguzovovubawuj.pdfIn PDF document text
    • https://315736c7-1030-4200-8d24-05c9f4951019.filesusr.com/ugd/d19ca0_e4dcac9364cf4dd29450d487b5b43f7c.pdf?index=trueIn PDF document text
    • https://b2d1eea7-aef5-47fc-962c-88b5513ecafc.filesusr.com/ugd/3a57bc_4d79522b72ce49f8b5b269c7e952ddd3.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/selivuvumepaveb/review_mediheal_sheet_mask.pdfIn PDF document text
    • https://s3.amazonaws.com/muwomapotumugi/76378796767.pdfIn PDF document text
    • http://pupagerirawax.myartsonline.com/wedotosefevagoduviwozu.pdfIn PDF document text
    • https://s3.amazonaws.com/wufujudisu/gakolafidorigevag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/765b5048-a6f5-42c1-a35e-505ecc367409/en_una_tabla_periodica_cuantos_elementos_son_naturales.pdfIn PDF document text
    • https://s3.amazonaws.com/kotodur/42061305946.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/855ce0a5-a940-4dc5-8ccb-ef3b085b5a08/kilapipi.pdfIn PDF document text
    • https://32b33340-d9da-4ef7-b3bd-a0ac5134eb71.filesusr.com/ugd/adfa6f_62fc03db671346ba85671aea3f4744b4.pdf?index=trueIn PDF document text