Malicious PDF — malware analysis report

Static analysis result for SHA-256 316d642a72f2418e…

MALICIOUS

PDF

72.1 KB Created: 2021-06-29 08:19:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-27
MD5: 6e2c03a9b715d3bf1622e3f3e82f9dfa SHA-1: d23f441754ff46862b103bc969f0f78ce1264032 SHA-256: 316d642a72f2418efaeff14849bca4d1e31893f84e4e08e12b9cdf7dafd74a31
124 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and exhibits characteristics of a link farm, with numerous URLs pointing to potentially compromised websites. The PDF structure and embedded links suggest an attempt to redirect users to external, untrusted resources. No scripts were extracted, and the document body was unreadable, limiting further analysis of specific user lures.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4729

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://ludifrance.fr/userfiles/file/fopatowanitojunogoponize.pdf In PDF document text
    • http://ylplj.com/ckfinder/userfiles/files/jerujomazijepojimer.pdfIn PDF document text
    • https://btsmstlucia.com/atomicsteps/upload/userfiles/file/venerigewiw.pdfIn PDF document text
    • http://entone.es/wp-content/plugins/super-forms/uploads/php/files/8fe0854407d3e4ced2b08f858a364f40/xuzutev.pdfIn PDF document text
    • http://rasmesafar.net/basefile/basefiles/rowilukaxuxitovutubinoza.pdfIn PDF document text
    • https://www.pietri-automobiles.com/wp-content/plugins/super-forms/uploads/php/files/1i9vidn0lf7t7d39qiqpvbq212/bulugiwuxam.pdfIn PDF document text
    • http://cetinelektrik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160c1ea89b6cb3---sawinegizuvidumoniv.pdfIn PDF document text
    • http://royalgoodviewresort.com/Uploads/file/29642938087.pdfIn PDF document text
    • http://a-kamen.com/userfiles/file/roziwati.pdfIn PDF document text
    • https://www.grandiosa.is/wp-content/plugins/super-forms/uploads/php/files/n9ujd88d6miuln9d09pooc9m32/jawodopimali.pdfIn PDF document text
    • https://sunrise-photon.com/upfiles/editor/files/gibexodizozamul.pdfIn PDF document text
    • https://brunoamaranti.it/wp-content/plugins/super-forms/uploads/php/files/78tbgmjcopdv292104bga7jb76/97418295497.pdfIn PDF document text
    • http://whatdwellswithin.com/file/rakusololulemugazolumaf.pdfIn PDF document text
    • http://www.grundys.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16093219b3a0be---31973857869.pdfIn PDF document text
    • http://netflor.pl/upload/File/mulopuxut.pdfIn PDF document text
    • http://gf-location.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1608610ce7bdf8---99196847323.pdfIn PDF document text
    • http://teusz.pl/UserFiles/file/pebovujikofenud.pdfIn PDF document text
    • https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/16082f7ec65236---volexinulalikiva.pdfIn PDF document text
    • https://www.mysmilestudios.com/wp-content/plugins/super-forms/uploads/php/files/02e104335a24973305efd196c1b51325/feregirane.pdfIn PDF document text
    • https://bikinibody.be/wp-content/plugins/super-forms/uploads/php/files/bqpv8n3aui3atatht2461oai1u/852062160.pdfIn PDF document text
    • http://www.iamgoingto1996.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075e12e01bf1---degebiwotipupar.pdfIn PDF document text
    • http://score1forspencer.com/clients/4/45/4587145e2679cb7673d0e21b436e5c25/File/gepivoriwejosudobawo.pdfIn PDF document text
    • https://solo-enoant.com/content/files/files/pidifalexawoj.pdfIn PDF document text
    • http://www.rebranded.tv/wp-content/plugins/formcraft/file-upload/server/content/files/160b680b3449b4---94185548018.pdfIn PDF document text
    • https://boyanbolyarski.com/userfiles/file/ximuvebu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=mary+poppins+jane+and+michael+banksPDF link annotation

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