Malicious PDF — malware analysis report

Static analysis result for SHA-256 949f2e301dae6324…

MALICIOUS

PDF

85.9 KB Created: 2021-09-21 07:12:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 564af5c18abe749929e158b75372b65e SHA-1: 837498b607d0cd3646dc047810e12b6a954fa87c SHA-256: 949f2e301dae6324dea6b40c62fbe89e5f723901e76317a87f4f6c5aeb9368a1
156 Risk Score

Malware Insights

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

The PDF contains a large number of links, many pointing to domains associated with compromised CMS uploads, indicating a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware delivery. No scripts were extracted, but the structure and URL analysis point to a common tactic of using compromised sites to host or distribute further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://pizzeria-millemiglia.de/app/webroot/img/editor/file/zoxavowozak.pdf In PDF document text
    • http://nd-58.ru/wp-content/plugins/super-forms/uploads/php/files/23c2866572f19fa75dde92c76308eff8/58327228341.pdfIn PDF document text
    • http://wojno-stal.pl/pliki/file/52660439032.pdfIn PDF document text
    • https://walnutcreekguide.com/wysiwygfiles/file/dufavinoga.pdfIn PDF document text
    • http://dxline.eu/userfiles/file/xebesurudokom.pdfIn PDF document text
    • https://kamionosnyelvlecke.hu/userfiles/file/gunozir.pdfIn PDF document text
    • https://myarchitect.es/ckfinder/userfiles/files/64219861387.pdfIn PDF document text
    • https://sklepbonus.pl/userfiles/file/fufas.pdfIn PDF document text
    • https://ohligschlaeger-berger.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613f037007940---regopoxezojagokogorafuvag.pdfIn PDF document text
    • http://sethhukumchandschool.com/userfiles/file/64682291406.pdfIn PDF document text
    • http://hakasasi.id/userfiles/file/rabumekaweva.pdfIn PDF document text
    • https://unitedfightalliance.jordanadams.com/ckfinder/userfiles/files/gibakosonurokufovu.pdfIn PDF document text
    • http://lagrupacio.cat/file/65230044873.pdfIn PDF document text
    • http://protectakoteasia.com/ckfinder/userfiles/files/84829364785.pdfIn PDF document text
    • https://futurefacesnyc.com/uploads/file/vubuzezazesomo.pdfIn PDF document text
    • https://www.phoenixdentalacademy.co.uk/wp-content/plugins/super-forms/uploads/php/files/0e15210991472aa1b242dce5220895cf/bodilekabusutu.pdfIn PDF document text
    • https://www.truckersplantparts.co.uk/ckfinder/userfiles/files/29938973415.pdfIn PDF document text
    • https://baconbites.com/wp-content/plugins/super-forms/uploads/php/files/qjase8d34juclupq55vb2hjtl2/3189640182.pdfIn PDF document text
    • https://skyfireconsulting.com/wp-content/plugins/super-forms/uploads/php/files/5ds6jf34i0lpqfbdrjulii1cs0/90439765148.pdfIn PDF document text
    • http://www.iuoelocal870.com/kaizen/ckfinder/userfiles/files/15145175210.pdfIn PDF document text
    • http://duepassidalcentro.it/userfiles/files/5608848018.pdfIn PDF document text
    • http://www.timtransportes.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/1613854092d813---37667614010.pdfIn PDF document text
    • https://konzolstudio.ro/uploaded_files/file/19427734136.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=il+corsaro+neroPDF 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_off0000eb5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB5D 9984 bytes
SHA-256: 6e115aa3fc60aebba2b96df1bb6e53cd0c445915de7c0cc2b53b829d4e03baf0
font_01_sfnt_off0001019c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1019C 18468 bytes
SHA-256: 69467e6abf773edad285ff710c68e1fc91e23a1989fa48ccaecf7d31c009e505
font_02_sfnt_off00013292.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13292 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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