Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d2e114432ef7aed…

MALICIOUS

PDF

84.9 KB Created: 2021-07-25 19:46:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: e060939dbde06918f1acd6e53ac3ff76 SHA-1: 0769afb22b5a18a3cc5cf7b51983a612859a1534 SHA-256: 2d2e114432ef7aedceb913252536748292715ca32074d8486ec0a1f97fda399d
156 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links, many pointing to compromised WordPress sites or disposable hosting, suggesting it functions as a link farm. The presence of these links indicates an attempt to direct users to malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 6

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://bajajsports.com/userfiles/file/9709725219.pdf In PDF document text
    • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609cfa6d685d4---21713442161.pdfIn PDF document text
    • http://qiuyutv.com/userfiles/files/20210610085825.pdfIn PDF document text
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/4e66edd1207f70a359c0e5a27b531c37/6256744193.pdfIn PDF document text
    • https://humble-brag.com/wp-content/plugins/super-forms/uploads/php/files/c0vq8at6u21006q03gd3egjomb/luwudobereganufeba.pdfIn PDF document text
    • http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d052d7d1f9d---1615963412.pdfIn PDF document text
    • https://turkihale.com/userfiles/file/mexuvomekigarebope.pdfIn PDF document text
    • http://mxagproducts.com/upload/browse/file/57527366874.pdfIn PDF document text
    • http://biosite.ru/images/news/file/45986981350.pdfIn PDF document text
    • https://namlongadc.vn/uploads/news/files/82147149207.pdfIn PDF document text
    • https://wecafephuket.com/wp-content/plugins/super-forms/uploads/php/files/gcmvtqusvfbfjmusf626sd1lvu/80090003394.pdfIn PDF document text
    • https://balaji-technology.com/userfiles/file/93630198975.pdfIn PDF document text
    • http://mfahk.com/upload/files/97615517031.pdfIn PDF document text
    • http://jarosi.hu/files/file/zagusugizikupalavilox.pdfIn PDF document text
    • http://abc-tel.ru/data/File/nagulegaribe.pdfIn PDF document text
    • https://e-ceramika.pl/userfiles/file/7960238420.pdfIn PDF document text
    • http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d22cd17f5a---vovibogadivubifukola.pdfIn PDF document text
    • https://fl-forever.com/upfiles/editor/files/lavidada.pdfIn PDF document text
    • https://soechi.net/userfiles/file/bokapojivoxijuko.pdfIn PDF document text
    • https://vildmarksjagt.dk/userfiles/file/36458744274.pdfIn PDF document text
    • http://bogieclassof67.com/clients/71235/File/72055900509.pdfIn PDF document text
    • https://oiweld.com/wp-content/plugins/super-forms/uploads/php/files/2b54d71479a5d841e9a3adc449735b1d/xilurogeserijizedemoni.pdfIn PDF document text
    • http://botanicgardenscafe.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160bfa5fca117a---10600341019.pdfIn PDF document text
    • http://radissonhoteltraining.com/userfiles/file/zorejibufimivanimofuzolep.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=pirates+of+the+caribbean+5+tamil+dubbed+movie+free+download+hdPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e718.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE718 16760 bytes
SHA-256: c85438002c1b0ce7ffcd854cbc6cb71464d708b96ed01569249b0e5fe7f64667
font_01_sfnt_off000112ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112AB 11268 bytes
SHA-256: 1b2b23b82ead5b15140a6f93a63e21bfbd4af23a4c712ac667415bd2a54519f1
font_02_sfnt_off00012d09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D09 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1