Malicious PDF — malware analysis report

Static analysis result for SHA-256 984ed584b90198d8…

MALICIOUS

PDF

104.7 KB Created: 2021-01-09 14:48:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 9c4c59da95a22a0a32a32a2b81018956 SHA-1: 966f3529cbb4bc6c05106415a274a7d3cc800043 SHA-256: 984ed584b90198d87821298ebf5a76ee4f9d668e732ae27ff07da27799986b25
214 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, with one heuristic specifically identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, appears to contain text related to a 'Diagrama de fusibles ford f150', suggesting a lure. The presence of multiple PDF links and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://cctraff.ru/123?utm_term=diagrama+de+fusibles+ford+f150 In PDF document text
    • https://static.s123-cdn-static.com/uploads/4415304/normal_5fc9ab505e67f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457847/normal_5fe13aa2cd945.pdfIn PDF document text
    • https://cdn.sqhk.co/fetadupozo/mic2ifY/sesemuzer.pdfIn PDF document text
    • https://mabulibatelirip.weebly.com/uploads/1/3/4/5/134597637/63749c0c29ff71.pdfIn PDF document text
    • https://mokapojigum.weebly.com/uploads/1/3/4/6/134690111/kabit.pdfIn PDF document text
    • https://xozowozorero.weebly.com/uploads/1/3/2/6/132695390/xawuke_tirekusegoguxe_danusomimonizi_riwelefaze.pdfIn PDF document text
    • https://cdn.sqhk.co/nuxarufodir/4QZ80d8/87345061603.pdfIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/savukojubusum/app_video_twitter_di_iphone.pdfIn PDF document text
    • https://s3.amazonaws.com/vavebufevodutob/36221125025.pdfIn PDF document text
    • https://s3.amazonaws.com/muvarelo/tosagipewixakasanuxasuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5edf6cc5-0bb0-4a0f-bc60-a6d99627e905/zatozow.pdfIn PDF document text
    • https://s3.amazonaws.com/fopalew/remawanizejufige.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43ef2f3e-9bba-4c3d-8108-84583765bb34/hp_laserjet_m3035_mfp_service_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/kifag.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://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0001440b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1440B 15684 bytes
SHA-256: 3aca60360f281c87db379be295261c28d29303b9d72c4fb73abaa137564e2846
font_00_sfnt_off000130c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130C7 5684 bytes
SHA-256: 635f00491c40ae41976e0f8e01630a071a9d8c387cbe013c1c0d77998601d944
font_02_sfnt_off00016e61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16E61 11020 bytes
SHA-256: 7d2e2e1037f708d5c70e1795b0c4bb0e560895d55480ea810ee7327eb0877640

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