Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd104c9b269273a8…

MALICIOUS

PDF

85.9 KB Created: 2021-09-17 16:25:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 2e2630de4d04285e81bb57205d375753 SHA-1: db44faba326a672519bffa8aab359ed35b06390e SHA-256: dd104c9b269273a8ea86b06ac5b505d1f2041aae82f6c9f1b2455021baf02bcd
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs that point to various websites, many of which appear to be compromised or disposable hosting. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or distributing further malware. The file's structure as a link farm suggests an attempt to obscure the ultimate destination and evade detection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6008

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
  • 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.
  • 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://synerhu.ru/uplcv?utm_term=stream+suicide+squad+movie PDF link annotation
    • https://chiataiec.com/userfiles/Proj_Name/files/78635184851.pdfIn PDF document text
    • https://www.shopveriamici.com/wp-content/plugins/super-forms/uploads/php/files/qqur3psptv3m5uu86smte2mcnm/xesagagatug.pdfIn PDF document text
    • http://swiftnb.com/ckfinder/userfiles/files/79351918576.pdfIn PDF document text
    • http://nakamurasangyou.jp/app/webroot/uploads/files/53409332768.pdfIn PDF document text
    • http://grasslandtj.com/upload/files/58840096731.pdfIn PDF document text
    • https://brihat-group.com/assets/userfiles/files/53245243518.pdfIn PDF document text
    • http://esteticka-stomatologie.cz/files/content/file/74094041943.pdfIn PDF document text
    • http://cmrivestimenti.com/userfiles/files/bixomazi.pdfIn PDF document text
    • http://clinicaveterinariasangiacomo.it/userfiles/files/85830578689.pdfIn PDF document text
    • http://dajuicebarus.com/uploads/files/40251378252.pdfIn PDF document text
    • http://sten.kr/club/data/userfiles/file/20210912213806.pdfIn PDF document text
    • http://aotwresort.info/ckfinder/userfiles/files/pibubogasaf.pdfIn PDF document text
    • http://alpinist.store/sribati/editor/uploadfiles/nawikidisorakarezido.pdfIn PDF document text
    • https://sharjahcements.com/images/bulk_images/files/xazipuxoviwinenaduxilel.pdfIn PDF document text
    • https://alemarferries.alemarsnp.gr/ckfinder/userfiles/files/kabujotexakujura.pdfIn PDF document text
    • https://bharatiyabhashaparishad.org/ckfinder/userfiles/files/nenigituboluwipajinukezuw.pdfIn PDF document text
    • http://thietbibepnhahang.net/media/files/pixusodejijixesedusux.pdfIn PDF document text
    • https://seroinstitute.com/wp-content/plugins/super-forms/uploads/php/files/5696aadbd9b5a1a825aa007b65c5a20e/satusufadokoweberi.pdfIn PDF document text
    • http://luckyassessoria.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16142fe843ccd4---30441024368.pdfIn PDF document text
    • http://allseasonsart.com/uploads/fck_uploads/file/90241259629.pdfIn PDF document text
    • http://www.tecnotrefg.it/wp-content/plugins/formcraft/file-upload/server/content/files/1612faaebe39a7---24699908216.pdfIn PDF document text
    • https://deycaterers.com/ckfinder/userfiles/files/japipemubebuvugabukoxem.pdfIn PDF document text
    • http://entone.es/wp-content/plugins/super-forms/uploads/php/files/79b17062cb15268d1827908af64131ce/99315573865.pdfIn PDF document text
    • https://antoinepanau.com/wp-content/plugins/super-forms/uploads/php/files/b33641c60f265fd0a51a78f6ac9aa471/pagatenuxagafawigogam.pdfIn PDF document text

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