Malicious PDF — malware analysis report

Static analysis result for SHA-256 d299b411b1e320cd…

MALICIOUS

PDF

63.6 KB Created: 2021-09-04 04:49:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 0d00361b343468ed6947f41abfef51ad SHA-1: efa16f4eb706d22aef9fed0815e054390be07f0a SHA-256: d299b411b1e320cde7a136743e1837cbf68aef5657a992d2ae0a9bf591792b83
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many pointing to compromised websites or disposable hosting, indicative of a link farm used for phishing or malware distribution. ClamAV detected this file as 'Pdf.Phishing.Trojan', further supporting its malicious nature. The presence of embedded URLs and the ML classifier's high score reinforce the assessment of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5407

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
  • 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://chcial.ru/uplcv?utm_term=ford+fiesta+2014+haynes+manual PDF link annotation
    • http://nitexprofi.cz/userfiles/file/42267909220.pdfIn PDF document text
    • http://www.elitagida.com.tr/wp-content/plugins/super-forms/uploads/php/files/5qrs4ia8j73c84r5jmsr5ikut5/wapoxetafe.pdfIn PDF document text
    • https://drsoleimani.ir/userfiles/file/80779390093.pdfIn PDF document text
    • https://wholisticvibrations.com/wp-content/plugins/super-forms/uploads/php/files/c903299a23acaa7bc3ab5e79fb10de10/xanusexegededofogiz.pdfIn PDF document text
    • http://zkojicin.cz/userfiles/file/51539310492.pdfIn PDF document text
    • http://meble-tk.pl/userfiles/file/44068120030.pdfIn PDF document text
    • http://npi-management.org/ressource/site-image/files/42433537889.pdfIn PDF document text
    • http://bi-acaovo.com/upload/files/11046935761.pdfIn PDF document text
    • http://kgmda.com/upload/files/51200721151.pdfIn PDF document text
    • https://zebcom.in/userfiles/file/xobumavewaruwuwoluvomuw.pdfIn PDF document text
    • http://reiki-roots.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608f98fe71baf---dulimukidoxanagevu.pdfIn PDF document text
    • https://hondaotohaiphong.vn/upload/files/80931150255.pdfIn PDF document text
    • http://argra.rs/wp-content/plugins/formcraft/file-upload/server/content/files/1608066db306f4---53106971804.pdfIn PDF document text
    • https://wulf-sanitaer.de/wp-content/plugins/super-forms/uploads/php/files/7avnhlr2te1d9tptcl2f2pk9vg/79747740883.pdfIn PDF document text
    • http://malverne69.com/clients/a/a7/a743c233813d1a1dbf5c38c484d85cdc/File/68924508479.pdfIn PDF document text
    • http://nkland.org/userfiles/files/51944402085.pdfIn PDF document text
    • https://athensviptour.com/wp-content/plugins/super-forms/uploads/php/files/1976c7189715b4ffc43827559615fb4a/95171625952.pdfIn PDF document text
    • https://rescue.bg/wp-content/plugins/formcraft/file-upload/server/content/files/1607d42813c031---65747633887.pdfIn PDF document text
    • http://licausi.it/userfiles/files/34558362106.pdfIn PDF document text
    • https://www.cdscabling.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c850c59f85b---zobelemudofejuwagas.pdfIn PDF document text
    • https://www.hinogas.com/wp-content/plugins/super-forms/uploads/php/files/4p04qk8ar9l83rituv70ms154n/81819912090.pdfIn PDF document text
    • http://apsara.ru/userfiles/file/zowofonivujunovul.pdfIn PDF document text
    • https://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16089765c2caf7---keravilabivusubitegakar.pdfIn PDF document text
    • http://ddmlife.com/ckupload/files/66518279945.pdfIn PDF document text
    • http://neoneofytou.com/ckfinder/userfiles/files/84902097758.pdfIn PDF document text

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