Malicious PDF — malware analysis report

Static analysis result for SHA-256 8414b641c6846163…

MALICIOUS

PDF

61.5 KB Created: 2021-06-11 05:08:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: b52e0fd79c51d8d7cf868eb2106067d7 SHA-1: 902c4137c7ff20d9397ef1d7a83bc39aca92db5a SHA-256: 8414b641c6846163ee3aabb692ebfdc89bc3ed19fc3119137754348e6be24680
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link farm designed to redirect users to various websites, some of which host further PDF files. The primary lure appears to be a search result for a game download, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9716

Heuristics 5

  • 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
  • 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://crewmak.ru/uplcv?utm_term=dragon+ball+z+tenkaichi+tag+team+mod+iso+download PDF link annotation
    • https://monarchwinemerchants.com/wp-content/plugins/super-forms/uploads/php/files/e693d00773dae7c042bd8aebd9bacb76/diwedisarop.pdfIn PDF document text
    • https://higher-reason.com/wp-content/plugins/super-forms/uploads/php/files/aaqeh4n4buuptgv5uln2qcfoe4/7379099901.pdfIn PDF document text
    • https://www.elitelawnsolutions.co.uk/wp-content/plugins/super-forms/uploads/php/files/meoqn093fv0lbg21j2t9k40sd0/76166256932.pdfIn PDF document text
    • https://zionapostolicministries.org/uploads/file/bugovuwararudivumevizaf.pdfIn PDF document text
    • https://108pizza.pl/uploads/userfiles/files/xixogifidalegud.pdfIn PDF document text
    • https://ohligschlaeger-berger.de/wp-content/plugins/formcraft/file-upload/server/content/files/16098b0c741ddd---66836612320.pdfIn PDF document text
    • http://nuraski.pl/wsg/userfiles/32015480356.pdfIn PDF document text
    • https://dfa-finanz.de/wp-content/plugins/formcraft/file-upload/server/content/files/16084db0d88c92---zusexibuxofumekixebiw.pdfIn PDF document text
    • http://www.ellisrasbetonwerke.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160b7d972c4265---6576213327.pdfIn PDF document text
    • http://magendans.com/imagefiles/file/61421216616.pdfIn PDF document text
    • http://plusbateria.com/wp-content/plugins/formcraft/file-upload/server/content/files/160840c3c43399---76751595625.pdfIn PDF document text
    • https://avenirpourtous.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160b857e012754---41811035362.pdfIn PDF document text
    • https://www.siemers-deutschmann.de/wp-content/plugins/super-forms/uploads/php/files/ga73u12hv16499rnfdtbhe37r4/mobididagidinutoxirun.pdfIn PDF document text
    • http://alliance-ltd.com/userfiles/wofatibefilotozipo.pdfIn PDF document text
    • https://q-web.ro/wp-content/plugins/super-forms/uploads/php/files/0ed78o3jmk7p0fc260ge0t3sl1/18473173094.pdfIn PDF document text
    • https://capitaleny.com/wp-content/plugins/super-forms/uploads/php/files/eec1cb35366ae678d0bbccd229ca6f8b/xokujazelarazajikonuk.pdfIn PDF document text
    • http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1606c916fad816---zawalajoduxegekabalagul.pdfIn PDF document text
    • http://scheidenschiedam.nl/uploads//file/pebejezorasowamezuv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn 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_off0000e804.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE804 5696 bytes
SHA-256: 773ce89caa8131a72fab0d9918510df5918ec8505b8c3d5c6cc1a8166d78ca5c

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