Malicious PDF — malware analysis report

Static analysis result for SHA-256 1494287307c4d745…

MALICIOUS

PDF

61.0 KB Created: 2021-09-03 21:00:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 446a36c8099f01431a51d5b27242533c SHA-1: ebfe6fea93ac7eae13c7d5cf5c86ec9f5e8156d5 SHA-256: 1494287307c4d745081727f7e8dbad8e6d0fc1b01fc425161b397a61c413093b
64 Risk Score

Malware Insights

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

The PDF document contains a link farm hosted on compromised WordPress sites, designed to redirect users to malicious files. Several heuristics indicate the presence of a link farm on disposable hosting, pointing to multiple distinct hosts. No scripts were extracted from this sample, and the document body was heavily obfuscated, making it difficult to determine the exact nature of the payload.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4855

Heuristics 4

  • 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
  • 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://amtusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091e6b13329a---59733769730.pdf In PDF document text
    • http://starlightcelebre.com/clients/4/43/43e9139217482d7666ce300faf566241/File/wexejemifonebav.pdfIn PDF document text
    • http://splogservice.ru/content/file/78211691997.pdfIn PDF document text
    • http://www.loicadesacavem.pt/wp-content/plugins/formcraft/file-upload/server/content/files/1608212457310f---foxalitikizij.pdfIn PDF document text
    • http://ownlines.com/upfiles/file/53985741229.pdfIn PDF document text
    • http://bagiez.com/userfiles/file/65973048911.pdfIn PDF document text
    • http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7c19be47f---36970976535.pdfIn PDF document text
    • http://www.brennholz-heinlein.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a1bc8fda8f7---fironulivafe.pdfIn PDF document text
    • http://fundacjahfg.pl/upload/file/21111508248.pdfIn PDF document text
    • https://petek.biz/resimler/files/52346123562.pdfIn PDF document text
    • https://sirikulsteel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611adf549bf98---82890768233.pdfIn PDF document text
    • https://moderator.lt/components/com_mijoshop/opencart/image/data/files/wukofunuvazeguweburup.pdfIn PDF document text
    • http://uat2.hkha.com.hk/ckfinder/userfiles/files/vulikunosedenemof.pdfIn PDF document text
    • https://lion-trading.co.uk/wp-content/plugins/super-forms/uploads/php/files/0dh62lnje826nf9nq6fd9q8pev/63462068759.pdfIn PDF document text
    • https://www.cfo-search.com/wp-content/plugins/formcraft/file-upload/server/content/files/160852f8479aa5---digepevabuza.pdfIn PDF document text
    • http://ednak.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f22321a8da---danozed.pdfIn PDF document text
    • http://cafegreenwichvillage.com/uploads/files/diziwutidixijer.pdfIn PDF document text
    • https://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160f7a28e24d09---21696589634.pdfIn PDF document text
    • https://kachhiproperties.com/wp-content/plugins/super-forms/uploads/php/files/75ae3e6ecdf01fcba26b357520e020b4/31355591705.pdfIn PDF document text
    • http://www.radioemka.com/wp-content/plugins/formcraft/file-upload/server/content/files/160983d54acd1f---29447542995.pdfIn PDF document text
    • http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b69f8f42b76---55544627437.pdfIn PDF document text
    • https://oumkua.com/userfiles/file/lozolazadexoloxe.pdfIn PDF document text
    • https://dipinkrishna.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609833ec88c38---sebesifabinutefobe.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=influence+of+science+and+technology+on+modern+society+pdfPDF link annotation

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

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