Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d7efc8a95c6f795…

MALICIOUS

PDF

48.0 KB Created: 2021-09-27 06:21:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: edea5596199353f86dc60426aeda268e SHA-1: d640c988790a49539de56ccafdc591195b97c990 SHA-256: 0d7efc8a95c6f795343a097330fc84d480003daf83953ed380954aabb57f9774
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs that point to various websites, many of which appear to be compromised or disposable hosting. The ML classifier also flagged this PDF as malicious. The primary purpose seems to be redirecting users to potentially harmful content, aligning with a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6966

Heuristics 4

  • 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://smidgel.ru/uplcv?utm_term=frozen+mod+apk PDF link annotation
    • https://growyourmoney.in/userfiles/files/fisoki.pdfIn PDF document text
    • http://dnepropress.net/files/file/29636143258.pdfIn PDF document text
    • http://samtekelektrik.com/files/jajuxix.pdfIn PDF document text
    • http://pozitron-s.ru/userfiles/file/purisegora.pdfIn PDF document text
    • https://blsautomation.com/ckfinder/userfiles/files/mokuvamovakutuzeluginap.pdfIn PDF document text
    • http://studiochiodo.eu/userfiles/files/vavuxukafagakifuf.pdfIn PDF document text
    • http://terhautz.com/upload_files/files/16568971141.pdfIn PDF document text
    • http://xn--80aaa1acmiejxr6d7fg.xn--p1ai/data/files/6671888961.pdfIn PDF document text
    • https://bykevin.com/wp-content/plugins/super-forms/uploads/php/files/afa83ff0ee632b3bd37d53e5770af353/fezaditarewufoxebake.pdfIn PDF document text
    • http://www.ibadirect.com/wp-content/plugins/formcraft/file-upload/server/content/files/16145daacebea1---wikifikisejut.pdfIn PDF document text
    • https://hoovermaids.com/wp-content/plugins/super-forms/uploads/php/files/a536e18052430c2b2e8a330a90d867bf/54868837266.pdfIn PDF document text
    • http://monthclean.com/uploads/files/202109260321397182.pdfIn PDF document text
    • http://e-motyle.natura2000.pl/imgturysta/files/munojijizonilisamodojazes.pdfIn PDF document text
    • http://globalnetworks.de/www.galabau-poscher.de/main/preview/ckfinder/userfiles/files/buzotogapusotuzegeje.pdfIn PDF document text
    • https://www.verpoort-bouw.be/wp-content/plugins/formcraft/file-upload/server/content/files/1614b6cf996f72---xorinifubokir.pdfIn PDF document text
    • http://creptiles.dk/userfiles/file/45272045955.pdfIn PDF document text
    • http://dealershop.es/camarasegovia/userfiles/file/12666782860.pdfIn PDF document text
    • http://yanartekstil.com/firma/files/94025514844.pdfIn PDF document text
    • http://prochem.vn/images/uploads/files/24252194349.pdfIn PDF document text
    • http://www.argentum.com/wp-content/plugins/super-forms/uploads/php/files/km533jv2p3jhj3npj4fuue9nv7/besenolorepidoga.pdfIn PDF document text
    • http://xn--b1adrijbbb.xn--p1ai/upload_picture/4474857671.pdfIn PDF document text
    • http://www.fuchingrading.com/upload/file/lufopekowonulenofaxovat.pdfIn PDF document text

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