Malicious PDF — malware analysis report

Static analysis result for SHA-256 abcf7fb55707c04e…

MALICIOUS

PDF

56.0 KB Created: 2021-09-21 12:21:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 7714e45bb63537c9cb07eb7ba45fd0d7 SHA-1: 9208c4bed53fc54d77c62cefbc73a4f01fe94bda SHA-256: abcf7fb55707c04e5ddba858fd3ac22753fd027be6fd3dd298de95572127c170
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised websites or disposable domains, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution. The presence of external URI heuristics and link farm indicators reinforces this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5388

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://inwebjor.ru/uplcv?utm_term=task+app+android PDF link annotation
    • https://nieruchomosciturystyczne.eu/files/file/gevibidazu.pdfIn PDF document text
    • http://ucinnovation.ru/admin/ckfinder/userfiles/files/budopi.pdfIn PDF document text
    • http://dongbanja.com/userData/ebizro_board/file/roropatopukufeb.pdfIn PDF document text
    • http://ilsogno-bomboniere.com/userfiles/files/fexifetetaxagikixupawenov.pdfIn PDF document text
    • http://wwsm-hk.com/files/file/rakovefukatuwanizivim.pdfIn PDF document text
    • https://jin-hung.com/userfiles/file/74913388420.pdfIn PDF document text
    • https://tecsal.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1612f35c231eb2---wuruxoniwuwolev.pdfIn PDF document text
    • http://lex.tj/img/file/35496715049.pdfIn PDF document text
    • http://sergeybazarov.ru/file/65693648617.pdfIn PDF document text
    • http://cleannshieldflorida.com/wp-content/plugins/super-forms/uploads/php/files/8796a1814acef574cd7ed0c70d3d9e38/61691663979.pdfIn PDF document text
    • http://toyotarent.tw/FileData/ckfinder/files/20210910_E95E03382791EE23.pdfIn PDF document text
    • http://daugiavanthienphuoc.com/media/ftp/file/44282810764.pdfIn PDF document text
    • http://halaljones.com/uploads/files/71923197292.pdfIn PDF document text
    • https://mlspoland.co/files/file/31309978207.pdfIn PDF document text
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/16144d51f01942---bumivaroruwugavixor.pdfIn PDF document text
    • http://doradcyprawni.com/images/pliki/18099084530.pdfIn PDF document text
    • https://gym-rectif.fr/ckfinder/userfiles/files/18177822096.pdfIn PDF document text
    • https://cplastik.net/data/cms/file/tabetaguwev.pdfIn PDF document text
    • https://xn--q3cceuw0c6ab0d2ii.com/upload_file/files/sudexoduzelerilopizavaxap.pdfIn PDF document text
    • http://artin-intranet.com/ckupload/files/88294808616.pdfIn PDF document text
    • https://tolgyesvolgy.hu/userfiles/file/98871503006.pdfIn PDF document text
    • https://a-pointpro.com/cms/ckfinder/userfiles/files/14828950402.pdfIn PDF document text
    • http://henanshuangxin.com/d/files/jazujunigi.pdfIn PDF document text
    • https://betsin.org/userfiles/files/89380324283.pdfIn PDF document text
    • https://www.adom.biz.pl/ckfinder/userfiles/files/nejixanipidomef.pdfIn PDF document text

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