Malicious PDF — malware analysis report

Static analysis result for SHA-256 4345d11681b84042…

MALICIOUS

PDF

73.0 KB Created: 2021-02-07 10:13:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 07f930aea69acdf428252f58dd7fef84 SHA-1: 33ed733467be516ddbcfbdc6b4add1a3d58c1424 SHA-256: 4345d11681b8404210e68987c070c9ea79e573d64ad5768e43f4c39ae2a41f89
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that redirects to a suspicious domain, likely as part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to lead the user to a malicious site, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jottigo.ru/wb?keyword=alpidex%20high%20performance%20tape PDF link annotation
    • http://dimax-matrasy.ru/mudixikivev5uesf.pdfIn PDF document text
    • http://samettemiz.xyz/zotejibtm2a.pdfIn PDF document text
    • http://teagreen.space/zepobexuwik0hwmj.pdfIn PDF document text
    • https://cdn.sqhk.co/lirebirab/gijd1gg/gumigat.pdfIn PDF document text
    • http://2220202.ru/69725984720bl62j.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489247/normal_6009245928f9c.pdfIn PDF document text
    • http://doordash.link/55609358378pf7k3.pdfIn PDF document text
    • http://instapriz365.site/video_site_listsvoe1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387406/normal_5fd939694c25a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412151/normal_6015fffe30267.pdfIn PDF document text
    • https://cdn.sqhk.co/wupetutigo/L8ibDjh/93637559527.pdfIn PDF document text
    • https://cdn.sqhk.co/foroboreb/dao7Qg2/12898940255.pdfIn PDF document text
    • http://kprovk.xyz/dazakoxijunikirgbay.pdfIn PDF document text
    • http://getcreditreport.info/according_to_matthew_full_movie_300mbeyt8x.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/60355872169.pdfIn PDF document text
    • https://s3.amazonaws.com/degisapemifa/gezekopufojibojoxod.pdfIn PDF document text
    • https://s3.amazonaws.com/wipotegadodorek/2043136258.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzumeb/bootstrap_template_shopping_cart.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
    • 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_off0000cb4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB4C 5448 bytes
SHA-256: 8ead734141a3404c5952ab7abde6a493c279bfaf86d23c849ee74f701ccf3892
font_01_sfnt_off0000ddb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDB0 10432 bytes
SHA-256: ca5abc794d0731d1189094fa97ac55776eb095efb83bc811619bc06796838d8d
font_02_sfnt_off0001016c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1016C 16140 bytes
SHA-256: 159427b32ed66bfbde86def5e6c2992bde67dfb25400c4000a37c9b59b949b61

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