Malicious PDF — malware analysis report

Static analysis result for SHA-256 014d6c65ef7ffad8…

MALICIOUS

PDF

103.3 KB Created: 2021-06-30 00:48:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: beac3c7d95df6eef059c56c761e2beb8 SHA-1: 519209a694eb2a53b5ace1a09fd349960548e0b3 SHA-256: 014d6c65ef7ffad823cba07a5175cc8a8a671f49926d1681529a22bd4b64e1c2
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains numerous links pointing to compromised WordPress upload directories and disposable hosting, suggesting it is part of a link farm designed to redirect users to malicious sites. The presence of external URIs and compromised CMS upload links indicates a likely attempt to exploit vulnerabilities or distribute further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9934

Heuristics 6

  • 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
  • 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 https://www.emma-solutions.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609f4aee57b5e---vixawemeguvizav.pdf In PDF document text
    • https://sgpropertylawyers.com/wp-content/plugins/super-forms/uploads/php/files/29b2a574e9b211bde32da4687dd3d943/76287762552.pdfIn PDF document text
    • https://xn--80aaaglcftt5alesfkk7f.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/2f21906de85592675b22485a8d53dd3b/rodolaxotuxeto.pdfIn PDF document text
    • https://addsfly.com/userfiles/file/17784933489.pdfIn PDF document text
    • https://christembassybarking.org/wp-content/plugins/super-forms/uploads/php/files/9b6871397bf01095cb396353ec5f91fd/85806354557.pdfIn PDF document text
    • https://sailstudy.in/ckfinder/userfiles/files/mukavepilikife.pdfIn PDF document text
    • https://sygimportaciones.com/wp-content/plugins/super-forms/uploads/php/files/92ipsrm16a13po0o6h9q8idcjr/79529001620.pdfIn PDF document text
    • https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b6667212279---gorisisegubogirozureguxu.pdfIn PDF document text
    • https://caravanandre.it/wp-content/plugins/super-forms/uploads/php/files/13fe34572a09ea8c37bd221a9293f8de/58498191550.pdfIn PDF document text
    • https://namastehealth.in/wp-content/plugins/super-forms/uploads/php/files/ds72l55nf45mnki5nfi3b2v5kl/sesuxepurufeje.pdfIn PDF document text
    • https://olmitek.by/wp-content/plugins/super-forms/uploads/php/files/85eapdnmg4do9p1sr2mtkk6k14/85611140118.pdfIn PDF document text
    • https://xn----7sbbjg7ctfs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/a715a7081d37924a9e9cf2b4f72313e9/39688456674.pdfIn PDF document text
    • http://kindervakantieweekdeurne.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160d2bd57643b1---17571542359.pdfIn PDF document text
    • http://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606e54fe106d0---14348098080.pdfIn PDF document text
    • https://www.duffylighting.com/wp-content/plugins/super-forms/uploads/php/files/f51b5686feb47d03472f4a5d631e92d5/80418866721.pdfIn PDF document text
    • http://brkvinc.com/userfiles/file/rodul.pdfIn PDF document text
    • https://habibitours.net/ckfinder/userfiles/files/demosonijewuzulidaf.pdfIn PDF document text
    • https://mls.lighting/wp-content/plugins/super-forms/uploads/php/files/a9f0129244f48c2226cec711889ca72f/24760319541.pdfIn PDF document text
    • http://meyanko.com/userfiles/file///15388292447.pdfIn PDF document text
    • http://morard-mcf.fr/data/Files/pixijimesimivifika.pdfIn PDF document text
    • http://grandinspirations.com/clients/75274/File/wivomagadiwomutixebaw.pdfIn PDF document text
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609cde5eaf18d---xosizuma.pdfIn PDF document text
    • http://vo23.ru/upload/file/xejoxefekabag.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=core+connections+course+3+chapter+4+answersPDF 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_off0001315d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1315D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001496f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1496F 17236 bytes
SHA-256: 5775b40225dd02c7d25a1a762d6477b73791059a5957172ddd1405b08140ad33
font_02_sfnt_off00017683.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17683 10892 bytes
SHA-256: 2400a51a46a092e0fef8e2561569772e115df0e3aa6d10856b11c5a8a4f19e80

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