Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a0d31cf31de9ad1…

MALICIOUS

PDF

72.5 KB Created: 2021-03-04 07:42:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 047c83d17430da4f43f3ce43fdf03188 SHA-1: a61470aabaf05e145fb07294d404a244ab00eda1 SHA-256: 6a0d31cf31de9ad156f20e4322afc5cfdd91d14afeee7d78c78bdd3eb2105ab3
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical detection for a link farm and a high confidence ML classification. The embedded URLs and the PDF structure suggest an attempt to redirect users to potentially malicious sites. While no scripts were explicitly extracted, the PDF's nature and the presence of numerous external links indicate a likely phishing or malware distribution vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://nipisod.ru/123?utm_term=humminbird+570+fish+finder+parts PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4411935/normal_5fc8535a4d33b.pdfIn PDF document text
    • https://cdn.sqhk.co/gabisolovima/ibhcgdZ/fifoxofales.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380413/normal_5ff98898dc60f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412996/normal_5fff0aa06aa48.pdfIn PDF document text
    • http://depozamojazuj.22web.org/tamil_movie_2019_jio_rockers.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486359/normal_5ffb8cfbafc93.pdfIn PDF document text
    • https://jinugavov.weebly.com/uploads/1/3/4/4/134438703/mugipode.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jokokimalofov.rf.gd/41141499567.pdfIn PDF document text
    • https://s3.amazonaws.com/dozore/birthday_invitation_templates_free_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/filidabut/nelupise.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_off0000df34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF34 5696 bytes
SHA-256: c9c11e31c86decb45495b591722cf5ac346b4e373ff34e82ad6a2a995616a321
font_01_sfnt_off0000f268.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF268 10260 bytes
SHA-256: af9c3fc6f4566c8c745c8cb1a5f04493fac91b55625f36cd5d0e13d392cf9822

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