Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab0b46acf8577ce0…

MALICIOUS

PDF

67.8 KB Created: 2021-09-04 22:01:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: fd0aea836adec30a31454ce0f009dbf6 SHA-1: f15f06a3838c9136e2957fa9fb2725bc55984cd9 SHA-256: ab0b46acf8577ce03350cb4f71c38f14bf737b9580da723cd611e369fa3f7b0f
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external links, many pointing to compromised WordPress sites, suggesting it's designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware distribution. The embedded JavaScript is likely responsible for initiating the download or redirection process.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6960

Heuristics 6

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://krisoc.ru/uplcv?utm_term=weight+watchers+scales+user+manual PDF link annotation
    • https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/16080a72f053a4---pamidemopesavif.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/nitujidulatizulibifite.pdfIn PDF document text
    • http://bukharaalpharetta.com/sites/default/files/file/85717732270.pdfIn PDF document text
    • https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/161214da232940---zogetipofekepixitugurelud.pdfIn PDF document text
    • http://tt-ural.su/admin/ckfinder/userfiles/files/vepenirakazogujokogeja.pdfIn PDF document text
    • http://az4group.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bb48ccac43c---36867340991.pdfIn PDF document text
    • https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c26268b3d0a---53527325195.pdfIn PDF document text
    • https://madopin.com/calisma2/files/uploads/diloxopolokevewaw.pdfIn PDF document text
    • http://lyzebrno.cz/userfiles/file/fopiluninefekunisufinev.pdfIn PDF document text
    • https://whitelightdesign.com/wp-content/plugins/super-forms/uploads/php/files/8f91ab472acb01957956d7a22c114cf1/kogejulitejo.pdfIn PDF document text
    • https://polinagerz.ru/wp-content/plugins/super-forms/uploads/php/files/esdnbo6dkn9jpud5e9iv8aoa1t/3316311288.pdfIn PDF document text
    • http://akiyastyle.com/app/webroot/js/ckfinder/userfiles/files/86319631830.pdfIn PDF document text
    • https://pasarantogel2.com/contents//files/paweponelixax.pdfIn PDF document text
    • https://www.kiakaha.gr/wp-content/plugins/super-forms/uploads/php/files/0gm443h6rvor8l3arp65h9175r/81714513819.pdfIn PDF document text
    • http://sbcnepal.com/images/file/66654092098.pdfIn PDF document text
    • http://cn-daomeng.com/upload/userfiles/files/575b85da75d5070cdca1d89b980cc9de.pdfIn PDF document text
    • http://meruzhankhachatryan.com/app/webroot/files/file/fijuwoxafogovoxezuso.pdfIn PDF document text
    • http://akademia-jedenastka.pl/zdjecia/fck/file/30611070946.pdfIn PDF document text
    • http://terezszilvia.com/images/uploaded/file/12398064566.pdfIn PDF document text
    • https://lawyerupsmart.com/tempimg/file/woxekofapewuvibobazadim.pdfIn PDF document text
    • http://cdmatik.com/uploads/file/wulojaxiverigewobip.pdfIn PDF document text
    • http://a2itsolutions.com/chop/multimedia/userfiles/file/lisiwivu.pdfIn PDF document text
    • http://blevy.com/ckfinder/userfiles/files/86471789837.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d95f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD95F 17284 bytes
SHA-256: 73c0ad8eebeb8be1a4362980df933840f2c9d9196c90fdae4192e58bdeb21aa2

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