Malicious PDF — malware analysis report

Static analysis result for SHA-256 dceb7d476dd00617…

MALICIOUS

PDF

113.5 KB Created: 2021-09-12 16:32:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: d5742ce7930e4261daf2749a4b27bd27 SHA-1: c69ae3120c14edf21b1bc72b5a8a3a0ecfde5e69 SHA-256: dceb7d476dd0061744c9a1c159b5b36276984c39d9c76f5233919067e86c1d98
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document contains embedded JavaScript and multiple links to potentially compromised websites, suggesting it is designed to exploit vulnerabilities or trick the user into downloading further malicious content. The 'SE_CALLBACK_LURE' heuristic indicates the document likely contains a phone number intended for callback phishing or a tech-support scam, aiming to deceive the user into revealing sensitive information or making fraudulent payments.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9890

Heuristics 8

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • JavaScript action low PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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 http://bige.vn/uploads/userfiles/file/83200721735.pdf In PDF document text
    • https://jasmijnbloemengroen.nl/userfiles/file/litobuzabakunaduwo.pdfIn PDF document text
    • http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16133ce8b052e7---pekojibugonano.pdfIn PDF document text
    • http://el-master.ru/userfiles/file/22686440757.pdfIn PDF document text
    • https://nabsangram.com/userfiles/file/duxutumiravib.pdfIn PDF document text
    • https://rffsev.ru/wp-content/plugins/super-forms/uploads/php/files/cfca77555919f604e78d0879c2404bd3/10004875243.pdfIn PDF document text
    • http://clarkfamilybuilders.com/home/clark/public_html/ckfinder/userfiles/files/4843862159.pdfIn PDF document text
    • http://sacoorhealth.pt/site/upload/file/89473032116.pdfIn PDF document text
    • http://ih-consultant.com/ckfinder/userfiles/files/damagej.pdfIn PDF document text
    • https://bushregenerators.biz/userfiles/files/riboxaxododozonafer.pdfIn PDF document text
    • http://vencedor.coop/images/admin/file/17908615392.pdfIn PDF document text
    • http://ekogamma.pl/javascript/ckfinder/userfiles/files/9205288788.pdfIn PDF document text
    • https://shreenatharcade.com/userfiles/file/senovuw.pdfIn PDF document text
    • https://fresh-cherries.com/ckfinder/userfiles/files/52207188297.pdfIn PDF document text
    • http://businessnavigator.in/ckeditor/uploads/files/vinezaxavesatug.pdfIn PDF document text
    • http://autoneza.cz/UserFiles/File/62504406451.pdfIn PDF document text
    • http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f7acc3265f---83695552948.pdfIn PDF document text
    • https://eminencesolutions.in/resources/userfiles/file/jamalifaritujawikomi.pdfIn PDF document text
    • http://eclickapps.in/userfiles/files/wabumegewexanugilapilo.pdfIn PDF document text
    • http://inkjetartandimage.com/Uploads/file/tavutalapeliwogu.pdfIn PDF document text
    • https://imagebuzz.net/ckfinder/userfiles/files/taxorebolesazufoj.pdfIn PDF document text
    • https://rafaellopezehijo.com/upload/files/tanezisigumudo.pdfIn PDF document text
    • http://maremio.ru/admin/ckfinder/userfiles/files/66369155486.pdfIn PDF document text
    • http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/381pubtv4pa367sp90peuldhc0/wemejalefujebirovad.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=download+fieldrunners+hdPDF 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

Related samples 6

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

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000138dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x138DC 16252 bytes
SHA-256: add6c7b71fcaddc83428463317442ccd394cabd5a997d6866a3f2e60c10d2687
font_01_sfnt_off00014ee4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14EE4 22360 bytes
SHA-256: 05d69c2bcd811bad6246b187b14a0c9ab726b77d85179415088e0872a46350cb
font_02_sfnt_off000187f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x187F2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off0001a009.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A009 10540 bytes
SHA-256: 11f9ab98ea413e687f4c962aeb6e19d19f86e82ef3b2fb8c0a5793fcc9eadae4

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