Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e1b9627bb03bb16…

MALICIOUS

PDF

54.7 KB Created: 2021-09-05 21:18:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-01
MD5: a8dea754c0c853b0e446f143296831d6 SHA-1: 3f5089bd5420c5ce30ebf71070d4e9c1579da61e SHA-256: 6e1b9627bb03bb1623e21c1646b3c00092a03b48195b2c4011d74bbcd0c75fe8
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The sample is identified as malicious by ClamAV and an ML classifier, and it contains embedded JavaScript. It also features numerous links, several of which point to compromised WordPress upload directories and disposable hosting, suggesting an attempt to distribute malicious content or phish users. The primary malicious link identified is http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/3100pd98jb6ir4qoan5u0v4mt1/newurupomuralalid.pdf, which likely serves as a download point for a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6601

Heuristics 7

  • 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 link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://catamma.ru/uplcv?utm_term=exemple+conclusion+plaidoirie+pdf PDF link annotation
    • https://mobilaide.com/upload/editor/file/lulijubiri.pdfIn PDF document text
    • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/3100pd98jb6ir4qoan5u0v4mt1/newurupomuralalid.pdfIn PDF document text
    • http://wonsakai.com/uploads/files/zanopuxikinusetaso.pdfIn PDF document text
    • http://mebelhotel.ru/userfiles/files/putetewefobibinobago.pdfIn PDF document text
    • https://agencement-menuiserie-var.fr/stockages/files/60732374094.pdfIn PDF document text
    • https://grupo.iberia.es/js/ckfinder/userfiles/files/vizirenebonusin.pdfIn PDF document text
    • https://www.sahabatkeluargahomecare.com/wp-content/plugins/formcraft/file-upload/server/content/files/160751721bc27b---rafiredawadolipakefota.pdfIn PDF document text
    • http://xn--aknmedical-yub.com/uploads/file/kavimogotadovedafit.pdfIn PDF document text
    • http://ineke-ott.nl/keramiek-beelden-imagesfile/65342376483.pdfIn PDF document text
    • http://uralteplostroy.ru/content/file/73818164266.pdfIn PDF document text
    • http://zenobiacultura.it/userfiles/file///viriwosi.pdfIn PDF document text
    • https://gyandeepjkss.org/userfiles/file/pedudosevegekami.pdfIn PDF document text
    • https://www.acptechnologies.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c6cebba907a---dunepoko.pdfIn PDF document text
    • https://clinicaabrahaoosta.com.br/ckfinder/userfiles/files/57386629615.pdfIn PDF document text
    • https://happycustomerservice.com/wp-content/plugins/super-forms/uploads/php/files/0e5b630a40e0ff43f98092111eec8740/22329939836.pdfIn PDF document text
    • http://teormech.ru/teormech/usrimg/file/50377939212.pdfIn PDF document text
    • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160cafb21764c9---25413198260.pdfIn PDF document text
    • http://yaeram.com/userData/board/file/jimamelagoxar.pdfIn PDF document text
    • https://trichynext.com/wp-content/plugins/super-forms/uploads/php/files/697b2b17cebc484ff9e286c4cbb16bd0/10671279490.pdfIn PDF document text
    • http://sinosteelcode.com/filespath/files/20210901052238.pdfIn PDF document text
    • http://dui-antidote.com/images/userfiles/file/19618378289.pdfIn PDF document text
    • https://somogyplusz.hu/files/15884508431.pdfIn PDF document text
    • http://argentum.coIn PDF document text

Open this report in the interactive analyzer, or submit your own file for analysis.