Malicious PDF — malware analysis report

Static analysis result for SHA-256 96d7abedd353811e…

MALICIOUS

PDF

72.3 KB Created: 2021-09-07 02:09:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: c985fbe52d0708bc99862c8344c73da3 SHA-1: 24cc37df85defc51f5933fde9187b4cb7abecfb9 SHA-256: 96d7abedd353811ebf65f70a758f760b97fd96b72fe5a80d20c0440f8d812480
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links to external websites, many of which are hosted on compromised or disposable domains, suggesting a link farm designed to redirect users to malicious content. The document body is heavily obfuscated and unreadable, providing no direct clues to its purpose beyond the heuristic findings.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

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://tempegaring.com/contents//files/14343507860.pdf In PDF document text
    • http://1hozain.ru/files/userfiles/files/64285066939.pdfIn PDF document text
    • https://mangallagn.com/images/file/76124325367.pdfIn PDF document text
    • https://harom.ro/files/file/48052575784.pdfIn PDF document text
    • https://www.webhisto.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160b11ed56148f---getumumaretukipatimapun.pdfIn PDF document text
    • http://yogathoitrang.com/quangbasanpham/app/webroot/upload/image/files/44556547626.pdfIn PDF document text
    • https://www.vedaaz.com/wp-content/plugins/super-forms/uploads/php/files/6f8e03ab8a180897f5d1c6e7663e61ee/1799921902.pdfIn PDF document text
    • https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ada1fbc4d19---mugazanilipaj.pdfIn PDF document text
    • http://sxcec.org/userfiles/file/zapezorusatirumuteriras.pdfIn PDF document text
    • http://cetinelektrik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160f047f7aeb7a---jenodoziwa.pdfIn PDF document text
    • http://cloverpark1959.com/clients/51168/File/sajekarabojubuludizunox.pdfIn PDF document text
    • http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e43948262a---69313083461.pdfIn PDF document text
    • https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/161368ff081bb7---36290558855.pdfIn PDF document text
    • http://imhyuk.com/imhyukeditor/userfile/file/lipapuzovugapesi.pdfIn PDF document text
    • http://diversecityuk.com/userfiles/file/gokisi.pdfIn PDF document text
    • http://bestforfishing.com/wp-content/plugins/super-forms/uploads/php/files/2b48529e707dceda5c08dc9b879dbf42/60409371619.pdfIn PDF document text
    • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c19bf0671ed---28386234010.pdfIn PDF document text
    • http://architettodrabeni.it/userfiles/files/80669850609.pdfIn PDF document text
    • http://lecieldesandes.fr/ckfinder/userfiles/files/61377775774.pdfIn PDF document text
    • https://www.ltgpartners.com/wp-content/plugins/super-forms/uploads/php/files/2b2902bfa5d3d911adbfb2bf8ac0235f/11048455710.pdfIn PDF document text
    • http://pmdrecycling.com/wp-content/plugins/formcraft/file-upload/server/content/files/160711d9e3622b---50013400074.pdfIn PDF document text
    • http://www.goataxiservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd5d6e0db9d---34612922124.pdfIn PDF document text
    • https://varbackaforskola.se/ckfinder/userfiles/files/goriwame.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=dentinogenesis+imperfecta+review+pdfPDF 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_off0000b854.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB854 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d06b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD06B 11068 bytes
SHA-256: 11bd0e2efc035a7f644938e8c6788fca28e7de8ba73021c65d9edf58615f9106
font_02_sfnt_off0000ea16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA16 16184 bytes
SHA-256: 38099d0e18b5257de38e8a5781f71b3ea18f4a47954585d750114f6084dffe6b

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