Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ea98cd1a6256e96…

MALICIOUS

PDF

70.7 KB Created: 2021-02-22 01:08:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 2496c0220b207b57c46728e82c437819 SHA-1: 4833aaa0bfeca1d053d088540f3b8242c2f285f1 SHA-256: 8ea98cd1a6256e96b2346f4b1a1df5839b4f08b433dbe031dc16d4684df713e2
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL 'https://yafferge.ru/aws?utm_term=what+is+force+class+8' is the primary indicator of malicious intent. While no scripts were extracted, the PDF structure and the malicious URL strongly suggest a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 3

  • 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.
  • 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://yafferge.ru/aws?utm_term=what+is+force+class+8 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4386849/normal_601fbbb51615c.pdfIn PDF document text
    • https://cdn.sqhk.co/nizekidido/jibjgu3/zofixuse.pdfIn PDF document text
    • http://freds.space/159857388455uwo1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466165/normal_5fdd853a795b6.pdfIn PDF document text
    • https://cdn.sqhk.co/tokarikadez/pjjuhcX/blend_me_photo_editor_for_pc.pdfIn PDF document text
    • http://tgesheff.xyz/36925376431t2rt4.pdfIn PDF document text
    • http://yourcy.com/31990204730es2a7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zekakodususebu.epizy.com/nature_pictures_hd_wallpaper_3d.pdfIn PDF document text
    • https://s3.amazonaws.com/batoragubukepo/nufabasun.pdfIn PDF document text
    • https://s3.amazonaws.com/lukepepe/78257026002.pdfIn PDF document text
    • https://s3.amazonaws.com/nitajosasa/tatoloketag.pdfIn PDF document text
    • http://bitetam.epizy.com/faxegukiwuru.pdfIn PDF document text
    • http://vejimugar.epizy.com/car_game_3d_2019.pdfIn PDF document text
    • http://mageparojepu.epizy.com/75170935219.pdfIn PDF document text
    • https://s3.amazonaws.com/ladojenefe/ariens_snowblower_manual_926le.pdfIn PDF document text
    • http://jalugegaru.epizy.com/ohms_law_worksheet_answer_key.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d8a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8A2 5176 bytes
SHA-256: 2a6880c8e50a24fefd6339ecddbd695ff596d5e82cbc9e6f724c9a5bac0daa12
font_01_sfnt_off0000ea45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA45 10396 bytes
SHA-256: fb8f69adaf35668186cc30d49eda42c20ca92660c5674ac7102f034dc3fcb830

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