Malicious PDF — malware analysis report

Static analysis result for SHA-256 d45079f72ca42624…

MALICIOUS

PDF

115.4 KB Created: 2021-06-27 16:01:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 07014cadb60fe0531b5e0ed20c45c8d0 SHA-1: ab7c875b26064bf99dd87a5474e9117d74aa2456 SHA-256: d45079f72ca42624b0c5560a03b51758dffefc7efe86f730f5e26be21ff1c2e6
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains numerous external links, many pointing to compromised CMS upload storage or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The presence of embedded URLs and the overall structure indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9855

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.
  • 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 https://pixomot.ru/uplcv?utm_term=feeded+meaning+in+tamil
    • http://gavinlawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/92646855984.pdf
    • https://anjingliar2.com/contents//files/74668519765.pdf
    • https://him-home.ru/wp-content/plugins/super-forms/uploads/php/files/487d68ce7fb5b862b3299091798d0f9e/50903022916.pdf
    • https://stagerightstaging.com/wp-content/plugins/super-forms/uploads/php/files/64500a4365823d05525959a10ebf14cf/faboxaloxorodajepuva.pdf
    • https://artasedanasingaraja.com/uploadfck/file/besudumepekatoz.pdf
    • http://www.goataxiservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fee477edb8---34553543081.pdf
    • https://sp-pir.ru/wp-content/plugins/super-forms/uploads/php/files/909c64791470fe81b13f77468c975985/risomomotajomanaxodevan.pdf
    • https://www.lesson-online.org/wp-content/plugins/super-forms/uploads/php/files/ind1hheps5qhugs00hg1tmu8l4/monusagus.pdf
    • http://attlas.center/userfiles/file/wogejavotedowidevijutif.pdf
    • https://brandonsmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/7vjqhbjocn6mv3ocifme10n0i7/59297992075.pdf
    • http://esipro.fr/userfiles/file/58810062848.pdf
    • https://afd.me.uk/wp-content/plugins/super-forms/uploads/php/files/ohdaggpl5uv7eqgm2mapeh8991/lukonipaxofisujub.pdf
    • http://www.bash.cl/media/file/xobopilonerokozowasusan.pdf
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/4e4ba1b4d1969837b73dfbfbac72622c/wejavolilur.pdf
    • https://vmkstroi.ru/wp-content/plugins/super-forms/uploads/php/files/fb9e2b652bd25e03bb660dc754661aba/davovavodaxeg.pdf
    • https://shotclock.ca/wp-content/plugins/super-forms/uploads/php/files/24a92ecce7796baacb6984e0f012c1cf/51045805453.pdf
    • https://www.okcfarmersmarket.com/wp-content/plugins/super-forms/uploads/php/files/209f6634e5856746932cb068c210a77a/11312416777.pdf
    • http://ebslang.net/_UploadFile/Images/file/70164566450.pdf
    • https://www.techsrollout.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c7b87f2f1da---natezusamuzepifafeg.pdf
    • https://fortlauderdale-carservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad2241c3121---90036496451.pdf
    • http://lavera.it/wp-content/plugins/formcraft/file-upload/server/content/files/160984b5661bb9---wovawosiliroxebajonawese.pdf
    • http://johndanton.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/dagilejefujofufupa.pdf
    • https://baconbites.com/wp-content/plugins/super-forms/uploads/php/files/2a9hv9jdgr2qfkv20hs5u515u6/xezina.pdf
    • http://animalscipublisher.com/files/upfiles/file/mesezutumorivaxetibab.pdf
    • http://sevenseahotel.com/uploads/images/files/71890090914.pdf
    • https://seataclighting.com/wp-content/plugins/super-forms/uploads/php/files/5d86949dd51a086f3162ce91ad03dd48/3207338060.pdf
    • https://www.edutechusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081893ae81bb---31369410096.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001624b.bin
b523c9d006c8ceb9db639dc84d510fc0b61bccab37ce288c353c82d163384d64
pdf-font-stream PDF embedded font (sfnt) at offset 0x1624B 18552 bytes
font_01_sfnt_off00019195.bin
d4f08ae14f100fd8442374742e3231997680bb5d8d997bc79c586f6d279d8507
pdf-font-stream PDF embedded font (sfnt) at offset 0x19195 10180 bytes
font_02_sfnt_off0001a814.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x1A814 16792 bytes