Malicious PDF — malware analysis report

Static analysis result for SHA-256 00a0fcbb7e73dd92…

MALICIOUS

PDF

76.8 KB Created: 2021-07-03 04:58:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 06eb0f8d8a4b4f98a8b6a85df5380d88 SHA-1: 976b8a49f10fcbd3288b8a18f293c66284c60c70 SHA-256: 00a0fcbb7e73dd927c9cc9be2becbed91da0da98833eea14c37d6fdc1f41c65e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites and are structured as link farms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution via these links. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with a phishing lure designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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 http://vibrosystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a325572aa8d---30621554837.pdf In PDF document text
    • http://maroba-zirndorf.de/file/10656496333.pdfIn PDF document text
    • http://quangcaosms.org/media/ftp/file/311749512.pdfIn PDF document text
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/kku5g39mj2leemrs41crg2fes3/69503311014.pdfIn PDF document text
    • http://wxeina.com/userfiles/files/mavikaxobosufej.pdfIn PDF document text
    • https://people11people.gr/uploads/File/fudefuk.pdfIn PDF document text
    • http://blsfamilyreunion.com/clients/1/11/11e20eb1c47c3498ff3e66fc1941d138/File/41651178223.pdfIn PDF document text
    • http://ouhkpthaa.org/userfiles/10262291401.pdfIn PDF document text
    • https://santchavarabed.in/ckfinder/userfiles/files/65850999114.pdfIn PDF document text
    • http://technoculture.cz/admin/upload/file/vuberapezorozogageneraro.pdfIn PDF document text
    • https://alnahamgroup.com/userfiles/file/36051203521.pdfIn PDF document text
    • http://knshzj.com/CKEdit/upload/files/25058604088.pdfIn PDF document text
    • http://lbs.ac.at/wp-content/plugins/super-forms/uploads/php/files/7859t3aqifb5n6q99kqa13oktr/33264731136.pdfIn PDF document text
    • https://kisikana.hr/userfiles/file/vomobudofedapu.pdfIn PDF document text
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1608bc9f1169b5---65803128645.pdfIn PDF document text
    • http://edu-family72.ru/content/images/uploads/file/93566146698.pdfIn PDF document text
    • http://agiusfuneraldirectors.com/files/file/sevefewujamitewofeferuw.pdfIn PDF document text
    • http://edu-family72.ru/content/images/uploads/file/74117516016.pdfIn PDF document text
    • https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/1609e845f06164---65818480379.pdfIn PDF document text
    • https://www.ccps.mx/wp-content/plugins/super-forms/uploads/php/files/491256558465fca371181bf798b11a3d/ramudegovigen.pdfIn PDF document text
    • http://xn--12cbg9dihj7egda2g6a7dceb1d2cp4nvgf4f.com/datas/files/85995790872.pdfIn PDF document text
    • http://baaningdoi.com/file_media/file_image/file/2938820414.pdfIn PDF document text
    • http://eotp.info/sites/default/files/fck/file/godijozutizikededesavo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=mlro+in+bankingPDF 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_off0000c97c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC97C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e193.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE193 10112 bytes
SHA-256: f1ee5488d2356ac78df467566ceab1625e8522d5edef2ee8035709b1f71c4bd2
font_02_sfnt_off0000f824.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF824 17664 bytes
SHA-256: 45857be111864239a4ab31a8d269f1514bf953bae46df8588358269648a5fae2

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