Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fc47c941200d180…

MALICIOUS

PDF

53.0 KB Created: 2021-09-13 14:56:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 9c331333e4e3cadbb4acb08cee17b238 SHA-1: 5ea74956b79cc8cca92a2fa097bf6e962e79e290 SHA-256: 6fc47c941200d180f9c57fa9b8065f21c56ede42c8e2f706c1a48576c6cd5508
154 Risk Score

Malware Insights

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

This PDF is designed as a lure, presenting itself as an image to trick users into clicking a link. The document contains numerous links to external PDFs hosted on compromised WordPress sites and disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6363

Heuristics 6

  • 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.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 52 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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 http://audiencefertilization.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/vuzawukawimazovexutemar.pdf
    • https://galerie-louise.be/userfiles/files/gojovekiwejekunili.pdf
    • http://pxmonastery.org/CKEdit/upload/files/tipuvi.pdf
    • http://zaiger.ru/img/file/liduxagakap.pdf
    • https://spherule.org/wp-content/plugins/super-forms/uploads/php/files/je1hfrnnn0adqnrt93ghophss2/85830411051.pdf
    • http://magic-mugs-factory.com/uploadfile/files/wurunok.pdf
    • https://galerieportelouise.be/userfiles/files/pifibeneva.pdf
    • http://strelnicebudejovice.cz/userfiles/file/65549415698.pdf
    • https://interference.ajoda.eu/userfiles/files/96215694315.pdf
    • http://st-johnson.com/Uploadfiles/files/folatur.pdf
    • http://twfindia.in/userfiles/files/14955144889.pdf
    • https://bhiringisamsankalimandir.org/ckfinder/userfiles/files/41338031972.pdf
    • http://agppi99.pretty-match.com/upload/files/39217119541.pdf
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613ddb6fce2b8---3542809458.pdf
    • http://andreagarciam.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613857d8e0b7a---65042520705.pdf
    • https://simovi.mx/wp-content/plugins/formcraft/file-upload/server/content/files/161313843b62c4---24059903301.pdf
    • https://roarmysecurity.ro/mm/file/65136464469.pdf
    • http://tradotel-riviera.com/file/17698124036.pdf
    • http://studiomedicoveterinariobellucci.eu/userfiles/files/17625491967.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=mobdro+official+apk