Malicious PDF — malware analysis report

Static analysis result for SHA-256 10d9a672d36a2f39…

MALICIOUS

PDF

79.8 KB Created: 2021-09-18 07:48:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: e29cde49926a14bf5663948fb7bbd777 SHA-1: 448ab8a0bc8132cce105afb5fbf265f7559a9970 SHA-256: 10d9a672d36a2f39a3db32aac288577cac1a238207f9658db0b3a3bb646c7a48
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The document functions as a link farm, directing users to numerous URLs hosted on potentially compromised or disposable domains. These links likely lead to phishing pages or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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://www.magicapro.it/wp-content/plugins/formcraft/file-upload/server/content/files/161428c008fa53---gexojuvidatusuvusijik.pdf In PDF document text
    • https://homeaestheticsllc.com/wp-content/plugins/super-forms/uploads/php/files/df2af2e58d02993672bde8233465c39c/23582143467.pdfIn PDF document text
    • http://dailymaytrogiang.com/userfiles/files/fozexoxigubulofetikokuwa.pdfIn PDF document text
    • http://doingthing.com/downloads/blog/geust/files/gufofakax.pdfIn PDF document text
    • http://xn----7sbbgprpk7biiq.xn--p1ai/admin/ckfinder/userfiles/files/rijorerodezoxakusukifav.pdfIn PDF document text
    • http://3dtechgroup.com/uploads/image/files/59481703349.pdfIn PDF document text
    • http://eachfun.com/ckfinder/userfiles/site_eachfun_com/files/ronatabera.pdfIn PDF document text
    • http://admio.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16141b79c865a2---83428032585.pdfIn PDF document text
    • http://93564497.com/userfiles/nelekezolubas.pdfIn PDF document text
    • https://invision.buzyhub.com/files/fijale.pdfIn PDF document text
    • https://brylka-kfz.de/wp-content/plugins/formcraft/file-upload/server/content/files/161392a273c2fa---66864305419.pdfIn PDF document text
    • https://brtim.com/uploads/wysiwyg/files/56536769338.pdfIn PDF document text
    • https://economiadecomunion.com/ckfinder/userfiles/files/lesololaguv.pdfIn PDF document text
    • https://prana.video/wp-content/plugins/super-forms/uploads/php/files/a2a5p8lq8fileieki0hei7u675/54016707032.pdfIn PDF document text
    • http://koszyczarek.pl/userfiles/file/32971755955.pdfIn PDF document text
    • http://munnartourism.com/uploads/file/xojoluxajatiwifiwomowubis.pdfIn PDF document text
    • http://gpmpoolandspa.com/ckfinder/userfiles/files/74844441124.pdfIn PDF document text
    • https://rosedreamholidayhomes.com/ckfinder/userfiles/files/jatitenelerabapibaju.pdfIn PDF document text
    • http://francescofesta.it/userfiles/files/nupipusipebuvomavulur.pdfIn PDF document text
    • http://folientastaturen.pl/_data/file/11457811629.pdfIn PDF document text
    • https://oldd.adventurenetbg.com/userfiles/file/fimagokuziduz.pdfIn PDF document text
    • https://mikludava.lt/images/files/54031122810.pdfIn PDF document text
    • https://patriciogaete.com/upload/file/72470610328.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=the+legend+of+korra+free+online+streamPDF 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_off0000d4ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4EE 10856 bytes
SHA-256: df8b37d50fa6332ea2063a95f05599f9eeb6eda65fb69b5a7f9720c68ac10de6
font_01_sfnt_off0000ed9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED9D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000105af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105AF 17272 bytes
SHA-256: 5e75be7e994dcb9582bbc7be5756ea1e1499d3a3c44a1e912a47bf089926e0ab

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