Malicious PDF — malware analysis report

Static analysis result for SHA-256 c532ed3c6e3af571…

MALICIOUS

PDF

88.3 KB Created: 2021-08-08 03:02:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: fb5f7e1445361ca3eee3a99ab74e366b SHA-1: c950c3849d4eb7f488d04e27b12e200178c6d319 SHA-256: c532ed3c6e3af571e3bdf08496f4f930b58e4c92c21d193955fa2d9575b9708d
224 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1190 Exploit Public-Facing Application

This PDF sample was flagged by ML classifiers and ClamAV as malicious, exhibiting characteristics of phishing and payment redirection lures. It contains embedded JavaScript and numerous external links, many pointing to compromised WordPress sites, suggesting an attempt to exploit vulnerabilities or redirect users to malicious content. The presence of these elements strongly indicates a malicious intent to deceive users, likely for financial gain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 9

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. 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 https://ketchas.ru/uplcv?utm_term=how+to+open+a+paypal+account+in+nigeria+2020 PDF link annotation
    • http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a51e29a1294---33606754286.pdfIn PDF document text
    • https://bravo-hk.com/userfiles/file/denesujapemikevexelej.pdfIn PDF document text
    • http://automsystem.com/UploadFile/file/20210509132113284.pdfIn PDF document text
    • http://lagrupacio.cat/file/wusilevit.pdfIn PDF document text
    • http://giaodantanthaison.com/Images_upload/files/kawokaneduroxavo.pdfIn PDF document text
    • https://eliteswimmingpoolsinc.com/wp-content/plugins/super-forms/uploads/php/files/ku3e4v345gpfr9i0rege7qhtm3/mavitupivewosepe.pdfIn PDF document text
    • https://pluckywize.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083ee5d73757---19608113851.pdfIn PDF document text
    • http://www.eflox.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607182853f05f---mojitigab.pdfIn PDF document text
    • http://avtoarka.ru/wp-content/plugins/super-forms/uploads/php/files/e28989902ecb9a724310570177be5e6e/792834265.pdfIn PDF document text
    • https://canvasations.com/wp-content/plugins/super-forms/uploads/php/files/99cmku7kdjo12uphmphc5v5734/vosefupo.pdfIn PDF document text
    • https://ocvirapuato.com.mx/wp-content/plugins/super-forms/uploads/php/files/62262d60b38d1c2059021f52da62f57f/vadepometixizadaxir.pdfIn PDF document text
    • https://advancedcheckcashadvance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9b3c0899e0---958131425.pdfIn PDF document text
    • http://dejede.com/userfiles/file/35816235148.pdfIn PDF document text
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/0826d52d95ad1c93bc0ec34e08e4e558/vuweneredu.pdfIn PDF document text
    • http://www.alrafeef.com/faisaliya/js/ckfinder/userfiles/files/suvazobipabano.pdfIn PDF document text
    • http://cuatudongbinhduong.net/uploads/files/85609184426.pdfIn PDF document text
    • https://www.ergunaygoren.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f7f9c1f4dc---53186773786.pdfIn PDF document text
    • http://hrt-foto.hu/_user/file/sedeviremukikekojekuda.pdfIn PDF document text
    • http://conroeclassof72.com/clients/d/de/de0acc14889d5d69ce6a2e221f3e79cd/File/90493448378.pdfIn PDF document text
    • https://creteservices.com/FCKeditor/userimages/file/62348161626.pdfIn PDF document text
    • http://waelfawzy.com/userfiles/file/71329431826.pdfIn PDF document text
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f0571049dd---nubor.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f52a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF52A 16852 bytes
SHA-256: cc45240c9f9370656ca11c1040917a7c1b52b656f1c58f90147818774b66a8c4
font_01_sfnt_off00012116.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12116 10912 bytes
SHA-256: 98e3811af9e568cb7154a5f8d90c7082377c3d5a92739f6b321790e03308cf07
font_02_sfnt_off00013a93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A93 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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