Malicious PDF — malware analysis report

Static analysis result for SHA-256 745bcb35eb8a037f…

MALICIOUS

PDF

81.8 KB Created: 2021-09-19 20:07:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 7879b4e5ff61ae713a70e5056aa04f5f SHA-1: 6c93d77984a98859bb9e421285fbb0daf3de4d72 SHA-256: 745bcb35eb8a037f6635cb4b116c216a92beac2cc201feba46d396ecd3338e90
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous URLs that form a link farm, many pointing to compromised WordPress sites or disposable hosting. The presence of a URL with a "hack dream league soccer 2020 coins" term suggests a social engineering lure to trick users into downloading further malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9846

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 https://inwebjor.ru/uplcv?utm_term=hack+dream+league+soccer+2020+coins PDF link annotation
    • https://cv-vezouze.fr/media/file/gemogizidupezi.pdfIn PDF document text
    • http://nnk.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16134d82b6c5bc---getobumolamatiku.pdfIn PDF document text
    • https://rpdev.org/ckfinder/userfiles/files/68568131961.pdfIn PDF document text
    • http://krajinar.cz/soubory/files/13142034182.pdfIn PDF document text
    • https://vilus.cz/userfiles/file/nigizigu.pdfIn PDF document text
    • https://betenagro.com/sites/default/files/file/55310440889.pdfIn PDF document text
    • https://aromamarketing.md/img/files/binotuga.pdfIn PDF document text
    • http://35ju.21tg.cn/uploadfile/ckeditor/files/pubitu.pdfIn PDF document text
    • https://anitt.in/ckfinder/userfiles/files/lexedajokapivujasemaj.pdfIn PDF document text
    • http://amicissiapiemonteisa.it/userfiles/files/10321848111.pdfIn PDF document text
    • https://livbiopharma.com/userfiles/file/metavim.pdfIn PDF document text
    • https://brianhigbielaw.com/UserFiles/file/26053799090.pdfIn PDF document text
    • https://universitecentrale.net/uploads/FCK_files/file/digaxevededuv.pdfIn PDF document text
    • http://gustosandvic.com/ckfinder/userfiles/files/wulawovekewikujowiwis.pdfIn PDF document text
    • https://alcoquimicos.com/ckfinder/userfiles/files/vugedisulebujiwep.pdfIn PDF document text
    • http://muabannhagiare.net/images/uploads/files/pufirajijesevazir.pdfIn PDF document text
    • https://webhosting4.net/media/file/21280619779.pdfIn PDF document text
    • http://beeshark.ro/app/webroot/files/userfiles/files/fivodefi.pdfIn PDF document text
    • https://gauravkankariya.com/wp-content/plugins/super-forms/uploads/php/files/0de99bc4f6ed6bdb9f0771e52e5eeda2/jisixosi.pdfIn PDF document text
    • http://lobi.md/userfiles/file/17181358176.pdfIn PDF document text
    • http://bloemenwinkelindex.nl/images/uploads/nizaxi.pdfIn PDF document text
    • http://logistra.fr/ressource/site-image/files/wevozigisif.pdfIn PDF document text
    • https://www.tessilgiada.it/wp-content/plugins/formcraft/file-upload/server/content/files/16135cce65cc19---fumexisenuvisizitimelelow.pdfIn PDF document text
    • https://palet-school.com/files/files/9578503825.pdfIn PDF document text
    • http://morethancars.nl/uploads/edytor/file/fafuguvazefenimoxojor.pdfIn PDF document text
    • http://zaiger.ru/img/file/zosev.pdfIn PDF document text
    • 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_off0000db61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB61 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f373.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF373 17232 bytes
SHA-256: b415f72cc4871996988b41c8414773b2c32530f17e9b1c32139b1952ea9814d2
font_02_sfnt_off00012026.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12026 11040 bytes
SHA-256: 950d4a7c47b775b1eaa3b0d97c6c8e552edcc4e7fb91b0f57948ee2b34393436

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