Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c480924bf7f0afe…

MALICIOUS

PDF

89.3 KB Created: 2021-05-28 06:23:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 8ec3ff1d87a4bf5fcc298731e9abc900 SHA-1: 61a66e83ad36e849a16d4fadc69850b1239c4684 SHA-256: 4c480924bf7f0afee65b7a164158151492f9da9ba69e2ff43a3adfb5779495d7
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to external websites, many hosted on compromised CMS platforms, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. While no scripts were directly extracted, the structure and URL patterns are consistent with a malicious document designed to exploit user trust.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://neavocats.com/wp-content/plugins/super-forms/uploads/php/files/04073a094bab14b5b22a1b54e41490bb/77128766121.pdf In PDF document text
    • https://www.pennlighting.com/wp-content/plugins/super-forms/uploads/php/files/84fbc2c19be59e6a16b64166f3b99482/6695457885.pdfIn PDF document text
    • https://fermuar.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608df12ba0580---56340713719.pdfIn PDF document text
    • https://www.mysmilestudios.com/wp-content/plugins/super-forms/uploads/php/files/e644f1e08456178ad4f72079aceae93d/51810051041.pdfIn PDF document text
    • https://growlocals.com/wp-content/plugins/super-forms/uploads/php/files/9f74986bba23b04ffa241f606794f982/21076936480.pdfIn PDF document text
    • https://stpetejazz.com/wp-content/plugins/super-forms/uploads/php/files/v3ii1b836dk5c1gg5q8febbecn/tojelopavokenovow.pdfIn PDF document text
    • http://alnoorcity.com/userfiles/file/defutupopoporoboma.pdfIn PDF document text
    • https://www.simcoerecovery.net/wp-content/plugins/super-forms/uploads/php/files/rk8f09l8a8jfemmcvfbrofi5jo/gojowezi.pdfIn PDF document text
    • https://benjamindreyer.com/wp-content/plugins/super-forms/uploads/php/files/3b05039bccaff25f175d74ff367bfd07/wejikulamij.pdfIn PDF document text
    • https://allcreaturesinc.com/files/files/kewegoneratiganebuzitema.pdfIn PDF document text
    • http://richmore.kr/uploadfile/fckeditor/file/36408617683.pdfIn PDF document text
    • https://www.hdontheroadnapoli.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607fd32ae4330---nipulisowizonirikilokawu.pdfIn PDF document text
    • https://indacphuc.com/wp-content/plugins/super-forms/uploads/php/files/81ofp109b9kp8i5j31mh5j9d7j/74026869633.pdfIn PDF document text
    • https://www.marbelitesa.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607b1b96107b7---gifikoriduluponobuvumele.pdfIn PDF document text
    • https://laihouston.com/wp-content/plugins/super-forms/uploads/php/files/6c8f34b183210f9c21a05ec31f436054/sowiromarunititidepebep.pdfIn PDF document text
    • https://vizzzio.ru/wp-content/plugins/super-forms/uploads/php/files/233de4383fa953684170b74eb9352f8d/vavovugesaz.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607dd3ffb1866---37795418246.pdfIn PDF document text
    • https://www.makathastaliklari.net/wp-content/plugins/formcraft/file-upload/server/content/files/160748926130a5---wuzukagesidizajew.pdfIn PDF document text
    • http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f44f8e9d93---520381545.pdfIn PDF document text
    • https://ketgate.eu/wp-content/plugins/super-forms/uploads/php/files/531ff6f190f0151e6b9ec7b3ef42a9ee/59967545068.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=dell+keyboard+where+is+num+lockPDF 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://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e267.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE267 3284 bytes
SHA-256: 5b04c6a82deab79d1aed4fac0b07a3d0c9ed8e9c71b03ead4d0fd5875999ce50
font_01_sfnt_off0000ee39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE39 5576 bytes
SHA-256: 1fde5dc357119ea02756ec85214a2599c5ed73d819834a31b4f411401851ba50
font_02_sfnt_off00010115.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10115 5812 bytes
SHA-256: acd9abe36e4ddf506b3cdda254529c3e82fde0706dea23a2d4078e32bd76a8fc
font_03_sfnt_off00010fae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FAE 17600 bytes
SHA-256: 07f8dd6345d9500d2ec8b733dedee9a5fdac9d21ca6c48c681747f55b7e68953
font_04_sfnt_off00014054.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14054 16068 bytes
SHA-256: 2e6efdb6ec6b06881b73571a6dc11127da1b4fc0f11d045bd7c2e12cbfc92ea6

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