Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd5d5986e9908142…

MALICIOUS

PDF

78.6 KB Created: 2021-07-05 06:30:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-02
MD5: 59aa0176a7eb1c6e3593a3b646db5540 SHA-1: 2f6ac93fe82628fe4bb4e6d0fefb6b389ed2bff2 SHA-256: bd5d5986e99081424fd9de8443f1b6f5d150f041e2bb9192138954fdc0723649
164 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9958

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://laborke.ru/uplcv?utm_term=one+block+minecraft+android+download PDF link annotation
    • http://arci-mp.fr/admin/File/44440125493.pdfIn PDF document text
    • http://younewstoday.com/task/userimages/file/62007036524.pdfIn PDF document text
    • https://arvikabc.com/images/uploadedimages/file/24356107825.pdfIn PDF document text
    • http://agenziaimmobiliarecannavo.eu/userfiles/files/jepabatojuno.pdfIn PDF document text
    • http://savitapiti.org/ckfinder/userfiles/files/pebafuboxubolirofuna.pdfIn PDF document text
    • http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/ggbobbdjukmjhvkthh476iqe62/fonanadoniwogavi.pdfIn PDF document text
    • https://expresstestingatl.com/wp-content/plugins/super-forms/uploads/php/files/08faf95d567c0353f7273ebbbc0adb18/tivawirudakavelas.pdfIn PDF document text
    • https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b299b84c1e4---fujivulofogira.pdfIn PDF document text
    • http://grani-tonkogo-mira.ru/wp-content/plugins/super-forms/uploads/php/files/ea4e50966eaa72c254bd4dee66fd85f1/14199391976.pdfIn PDF document text
    • http://triumphtoday.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609d0df2b7bf6---20093913352.pdfIn PDF document text
    • https://bahia-group.com/ckfinder/userfiles/files/52084254170.pdfIn PDF document text
    • http://www.makattakasinti.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d1910ccbed---91520835071.pdfIn PDF document text
    • https://sitpchemcieszyn.pl/_sitpchem/file/gobokokipipijekadib.pdfIn PDF document text
    • https://xlux.vn/wp-content/plugins/super-forms/uploads/php/files/bdgl9lbeogjbfg3q93n8vuh38r/92746286007.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc633522f0---bedenolinolipof.pdfIn PDF document text
    • http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/160896453a90bc---96439049478.pdfIn PDF document text
    • https://asthasupermarket.com/userfiles/file/92827247599.pdfIn PDF document text
    • https://mattweidnerlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4fa3201cde---17623149510.pdfIn PDF document text
    • http://podushka.by/files/files/talatawitoxada.pdfIn PDF document text
    • http://xedaptap.net/userfiles/file/govudujisital.pdfIn PDF document text
    • http://www.saito-ken.jp/userdata/file/ziziruwodupunemamifore.pdfIn PDF document text
    • https://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c31f99c4c64---12931360621.pdfIn PDF document text
    • https://xn--64-mlcufjjaii0l.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/45325652f6ec168d36f7f901e0b6b8e5/gunafowenujebakap.pdfIn PDF document text
    • 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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d13b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD13B 16524 bytes
SHA-256: 948d19460762ab3940750096f204788185f08450919ceb29baa7bb73579a53b3
font_01_sfnt_off0000fc4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC4D 10812 bytes
SHA-256: dff17aacc6921c859bc91ff8ae25e4f0461cf0dd0c42a16f8dcde7db53fe438b
font_02_sfnt_off00011549.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11549 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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