Malicious PDF — malware analysis report

Static analysis result for SHA-256 03d715f34b40c895…

MALICIOUS

PDF

90.2 KB Created: 2021-06-29 19:41:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 5d76dd68ad6419908e5dc2f7c22983eb SHA-1: 3786ff39572b1258050763324315a6bdc1ef0aff SHA-256: 03d715f34b40c8959b19249a0b8f52c32f7bec7ab9e5e4c822900736a9040fd7
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The file contains numerous links, many pointing to compromised websites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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 http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160bddf1542b27---bejeziditomutupu.pdf In PDF document text
    • http://ourhkg.com/UPFILE/userfiles/files/37267620656.pdfIn PDF document text
    • http://christopherspubandgrille.com/userfiles/files/kezakoramasoxobubufi.pdfIn PDF document text
    • https://engineeredrepinc.com/wp-content/plugins/super-forms/uploads/php/files/7f09518dbee04ffc197702871e8e23ae/65859785109.pdfIn PDF document text
    • https://fmpride.com/wp-content/plugins/super-forms/uploads/php/files/75f01eabfd0cbe946628fb0e24941675/rodexisajizaxefamu.pdfIn PDF document text
    • http://xn-----6kcaheblih5ab0a6afqbzoqe.xn--p1ai/ckfinder/userfiles/files/fotagenitanelanuwu.pdfIn PDF document text
    • http://georgekoldun.com/var/upload/file/75150924521.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/9c23c88847006d3c70b30536c307e9e3/57538566940.pdfIn PDF document text
    • http://okeefesreef.com/ckfinder/userfiles/files/79468597912.pdfIn PDF document text
    • http://blpest.com/UserFiles/file/robisugogemafesu.pdfIn PDF document text
    • https://medtek.vn/storage/file/78492429845.pdfIn PDF document text
    • http://www.gaviprintpack.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607de77fefb6e---51700629267.pdfIn PDF document text
    • https://summit-christian-academy.org/scauserfiles/files/73754601100.pdfIn PDF document text
    • https://sckprime.com/wp-content/plugins/super-forms/uploads/php/files/084e8f1dec8420c9acdd0a611ac9f93c/87750982126.pdfIn PDF document text
    • http://asdgolfclubtoscana.com/writable/public/userfiles/file/24058677506.pdfIn PDF document text
    • http://homespakistan.net/magzine/uploadfiles/file/dajedisifaxu.pdfIn PDF document text
    • http://anthonyvienna.com/sites/default/files/file/47591810324.pdfIn PDF document text
    • http://www.corazondelsol.es/ckfinder/userfiles/files/13995281270.pdfIn PDF document text
    • https://antoinepanau.com/wp-content/plugins/super-forms/uploads/php/files/857f3049d5730677cfbe31254406661b/tiwogud.pdfIn PDF document text
    • https://seitonsolutions.com/ci/files/49294106861.pdfIn PDF document text
    • http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160c1e6f1574c7---larotexu.pdfIn PDF document text
    • https://butchercurnow.com/img/shop//contents/javejepamaraper.pdfIn PDF document text
    • http://bezpieczna-strefa.pl/wp-content/plugins/super-forms/uploads/php/files/738e54720ea2816fffbd1a7b0338b4b6/60542719415.pdfIn PDF document text
    • http://www.fattyweng.com.sg/wp-content/plugins/formcraft/file-upload/server/content/files/160c8a0e2e109d---zonosigavi.pdfIn PDF document text
    • http://trainternational.in/wp-content/plugins/formcraft/file-upload/server/content/files/160abd8fe42e46---38359518451.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=murder+on+the+orient+express+download+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_off0000fd45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD45 17084 bytes
SHA-256: 88ff8248dcde1fd16169e7ad273f853044a0213701e4192493fa3173d27a4518
font_01_sfnt_off000129d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129D3 10876 bytes
SHA-256: 98e9209368ac4241a85c931168b772e908e474829dcc9cd756c882ab851170d3
font_02_sfnt_off000142f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x142F6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1