Malicious PDF — malware analysis report

Static analysis result for SHA-256 048912017745dc05…

MALICIOUS

PDF

74.2 KB Created: 2021-06-21 07:03:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: f50fa234027403a47a84b143f44635a0 SHA-1: a0a28bd7b986b5e29b780b1fea2bbbaaa769f5ca SHA-256: 048912017745dc057c645699c5c4318cf6ed4727238e3d4047d9a631e52f2cf1
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, directing users to various compromised websites and disposable hosting domains, likely to facilitate further malicious activity or downloads. The presence of external URIs and link farm heuristics strongly suggests an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://garglob.ru/uplcv?utm_term=dj+afro+movies+download+mp4 PDF link annotation
    • https://butterfly-propertymanagement.com/userfiles/file/fanorag.pdfIn PDF document text
    • http://adria-ex.com/images/blog//file/12090157257.pdfIn PDF document text
    • http://say-international.eu/userfiles/file/24412223284.pdfIn PDF document text
    • https://www.d-table.com/wp-content/plugins/super-forms/uploads/php/files/ccf1debfee2859320fef1cb0da1a7a88/xemesubumajadamurakoja.pdfIn PDF document text
    • http://zonwering-belgie.com/ckfinder/userfiles/files/lopuxib.pdfIn PDF document text
    • http://longarmquiltacademy.net/fckeditor/userfiles/file/vutezeturupej.pdfIn PDF document text
    • http://drvision.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606eb9e6c8e3f---japubanigagemudupatanav.pdfIn PDF document text
    • https://www.alertgy.com/wp-content/plugins/super-forms/uploads/php/files/561b254fc37059096f016181555fadc5/2699352946.pdfIn PDF document text
    • https://rebel-guitars.com/wp-content/plugins/super-forms/uploads/php/files/729c9430e96ac3f0f36f06baeb227c6b/93329921449.pdfIn PDF document text
    • https://alarrabnews.com/images/content/content/file/38600240570.pdfIn PDF document text
    • http://hk-dcc.com/wp-content/plugins/super-forms/uploads/php/files/dggsalmuqvd5qusggakg32dl3e/57897895164.pdfIn PDF document text
    • http://apcmagon.com/userfiles/44376551945.pdfIn PDF document text
    • https://amitadevnani.com/userfiles/file/80958735667.pdfIn PDF document text
    • http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606dbef642dd3---komufasaxaletix.pdfIn PDF document text
    • https://condicionamentofisico.com/arquivos/file/xofufe.pdfIn PDF document text
    • https://fedico.ca/upload/editor/file/gulimagaxuta.pdfIn PDF document text
    • https://www.myjamaicais.com/wp-content/plugins/super-forms/uploads/php/files/aa245990b84c6f44c7de441de3a7ac55/40415840800.pdfIn PDF document text
    • https://deconkhoemanh.com/wp-content/plugins/super-forms/uploads/php/files/u0v7g0da5ik9tr1bhhc3pi2kdu/35663302495.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e415.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE415 5504 bytes
SHA-256: 1f19fb71d4730c036c9548c26df42dbf6621c906a1f78455c48274d16d2f9f8f
font_01_sfnt_off0000f6e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6E2 10912 bytes
SHA-256: b1c31a40d4e20051f6b4e7f85f77081b4d424e95aa1ba4de4736c7b51848dc33