Malicious PDF — malware analysis report

Static analysis result for SHA-256 f463bd5324266dc4…

MALICIOUS

PDF

69.1 KB Created: 2020-12-28 17:37:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 88ab22d04ff7b36b6a6b61ac92881a38 SHA-1: 6d9451ba62938b83db4f62e3f173c97bcf581f17 SHA-256: f463bd5324266dc4f7c44eceb3827306d1d5583960fbbd1e6c4724e63949a35a
96 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with a high risk score. It contains an external URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and the presence of external URLs suggest it's designed to lead the user to malicious content or download a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafficel.ru/aws?utm_term=facebook+cover+photo+maker+template PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379723/normal_5f90895f30d9e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450147/normal_5fe55abeabba1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366664/normal_5fd6a8859ee10.pdfIn PDF document text
    • https://cdn.sqhk.co/zivudasexoni/fjdjeii/skin_creator_for_minecraft_apk_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416661/normal_5fe7959ceee07.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454281/normal_5fadc49b285e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449602/normal_5f9eda5a8a5df.pdfIn PDF document text
    • https://cdn.sqhk.co/ludukuni/bigjf8D/tarot_cards_reading_free_love.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/vajefam/17683897459.pdfIn PDF document text
    • https://s3.amazonaws.com/tifuwuw/davulojotiwogelizado.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/280d78fe-4410-4e81-b0c7-ba1c7d06f607/lavupetebope.pdfIn PDF document text
    • https://s3.amazonaws.com/tojazudibumogab/amin_paling_serius.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/king_edward_vi_lichfield_ofsted_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e9e25bf-0849-4975-abb3-d137cd9f7606/kick_the_buddy_free_download.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_off0000d143.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD143 5216 bytes
SHA-256: 2656611381e732df01fcfb1b460562a0017775c0d0fd1e4f401178e23646269e
font_01_sfnt_off0000e2db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2DB 10880 bytes
SHA-256: 7b5e8139213997bb215a7fc02c9c32c36597e284e4e009cfdb3c2030372bae4c