Malicious PDF — malware analysis report

Static analysis result for SHA-256 342c42d00cb2b2d8…

MALICIOUS

PDF

88.0 KB Created: 2021-07-08 04:43:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: da615de9c57072b31e341a41f055c324 SHA-1: 9da709a5294390ddfc2d2b100a1a27434dbb2fa7 SHA-256: 342c42d00cb2b2d8a8cd9a92d77941cdf2aa88e6d09fe71d6121b62809891a04
96 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed to distribute traffic. The ML classifier strongly flagged this PDF as malicious, supporting the assessment that it is intended to lead users to potentially harmful content. No scripts were extracted, and the document body was unreadable binary data.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 5

  • 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://lamachine.nl/userfiles/file/10104272245.pdf In PDF document text
    • http://paykaaluminiya.ru/ckfinder/userfiles/files/58675899812.pdfIn PDF document text
    • http://dentherapia.hu/files/file/19400602043.pdfIn PDF document text
    • http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608624d1ca440---39906033132.pdfIn PDF document text
    • http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d5711ce6e9---14638849328.pdfIn PDF document text
    • http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/16081e3b7e3b2a---bedekesenazasatakodikoz.pdfIn PDF document text
    • https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608285605d8ff---25636159420.pdfIn PDF document text
    • https://ahreco.com/uploads/news_file/88786085700.pdfIn PDF document text
    • http://pvsystexperts.com/wp-content/plugins/super-forms/uploads/php/files/ehbfv15felbnl618e8oq4478c7/49236745547.pdfIn PDF document text
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/1rvm60j4tubim4c8fvvkb35pdu/28550340924.pdfIn PDF document text
    • http://mvclassof1990.com/clients/8/8c/8ca0ba2c7a07c5cd1f21f9fc323c16c5/File/jaluzomekediponotazomova.pdfIn PDF document text
    • http://brcassociati.com/userfiles/files/60396533028.pdfIn PDF document text
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/009cf50b43069cc4f12a4765fccbc549/17742916317.pdfIn PDF document text
    • http://learnersdigest.org/userfiles/file/gesukoxerogan.pdfIn PDF document text
    • http://acpiindia.com/userfiles/file/kazoliguboxatunobupo.pdfIn PDF document text
    • http://homespakistan.net/magzine/uploadfiles/file/19780910602.pdfIn PDF document text
    • http://cascinamana.it/userfiles/file/63586653777.pdfIn PDF document text
    • https://www.infrascale.com/wp-content/plugins/super-forms/uploads/php/files/4e93db080af91dd8b2dcc034ae8b2456/64431948122.pdfIn PDF document text
    • http://amoy-art.com/Upload/file/tuwujedidogarabibax.pdfIn PDF document text
    • https://inchiriereelicopterromania.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a856df89d55---48495850365.pdfIn PDF document text
    • http://abwingssuffolk2.com/uploads/files/30641499998.pdfIn PDF document text
    • http://distributoram.com/files/file/29373287465.pdfIn PDF document text
    • https://zanhotel.ro/beficientconsultingFiles/file/51337907079.pdfIn PDF document text
    • http://vodnik48.ru/content/file/lodozaxosutax.pdfIn PDF document text
    • https://istocdukkan.com/userfiles/files/57307306214.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=tamil+new+movies+mp3+songs+free+downloadPDF 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_off0000f45c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF45C 17036 bytes
SHA-256: 3d8e5547764acdb836b8579b7478886f59b6c4075256dcac7346b742884fbf50
font_01_sfnt_off00012101.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12101 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013918.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13918 11028 bytes
SHA-256: e1766575142a37fc6aae6eb9db84be38bdc97253f5a5e8f8563f167988df11ee