Malicious PDF — malware analysis report

Static analysis result for SHA-256 70a1c6bd8da65c88…

MALICIOUS

PDF

78.1 KB Created: 2021-07-31 15:53:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 9f712ba1f90f0840cc47600db48f9b2c SHA-1: e812d1138df63fd1ecfe8ce51ef25c5f4d20b7f7 SHA-256: 70a1c6bd8da65c88bf7451ac6de010bef568085c1255b6a8132d31fb24b11b30
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged by multiple heuristics and a machine learning classifier as malicious. It contains numerous embedded URLs that point to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports a phishing or trojan distribution intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9084

Heuristics 5

  • 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
  • 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://coretry.ru/uplcv?utm_term=how+get+free+money+on+bloxburg PDF link annotation
    • https://gpuhub.net/wp-content/plugins/super-forms/uploads/php/files/9iue0tljv3e79l3mcssajek0eb/bupomivuweben.pdfIn PDF document text
    • https://bloomland.com/sites/bloomland.com/files/43164523862.pdfIn PDF document text
    • http://pebyte.com/wp-content/plugins/super-forms/uploads/php/files/784i21jh0fq52f8sdop5tpcth4/zazudijaresusaxexevobolof.pdfIn PDF document text
    • http://andreagarciam.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072d6b2d00ce---80793481277.pdfIn PDF document text
    • http://jncs.kr/page_data/file/20210719092450.pdfIn PDF document text
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a500b21c125---tujipibomidimojapip.pdfIn PDF document text
    • http://payassistinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608018791862a---likusumefowukosujexomexiv.pdfIn PDF document text
    • https://anjingliar2.com/contents//files/12774978747.pdfIn PDF document text
    • https://stcatherine.ac.ug/wp-content/plugins/formcraft/file-upload/server/content/files/1606d36436df15---sipofoworoz.pdfIn PDF document text
    • https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b964b786187---gibutirenisomokawema.pdfIn PDF document text
    • http://lideparts.com/userfiles/file/1621452167.pdfIn PDF document text
    • https://toromecanicorodeo.com/files/25972316013.pdfIn PDF document text
    • http://laweasy.kr/userfiles/file/narekopidi.pdfIn PDF document text
    • https://infoenergie-loire.org/userfiles/file/geledudadulasufalupas.pdfIn PDF document text
    • http://dr-onesrl.com/userfiles/files/74921967390.pdfIn PDF document text
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/160abc28faff25---15821969082.pdfIn PDF document text
    • http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160872ae9ea73d---23174987210.pdfIn PDF document text
    • https://himalayanwanderer.com/himalayan/userfiles/files/kovizuvig.pdfIn PDF document text
    • http://www.optionassurance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160ab25906b9f3---53383504254.pdfIn PDF document text
    • http://kientrucnhacuagio.com/upload/files/bivodowajurowitebalo.pdfIn PDF document text
    • https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0a2b2cd21e---2302340597.pdfIn PDF document text
    • http://imreelectric.sk/uploads/file/falutovozefid.pdfIn PDF document text
    • http://sportsgarten.com/editorData/file/duxewalaz.pdfIn PDF document text
    • https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160767af758683---walewosebaxaba.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010856.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10856 17372 bytes
SHA-256: 32ce9df9c602645ff207df57273c89e45a1c9d435d60101e1c02188dcbd64d92

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