Malicious PDF — malware analysis report

Static analysis result for SHA-256 d692da80a7bcb84d…

MALICIOUS

PDF

70.3 KB Created: 2020-11-23 15:32:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: a38283210527230c7d5bf4c24ca7af31 SHA-1: d84027d32a23ee66786cd3980465910de777446a SHA-256: d692da80a7bcb84d9cfd3d6fab8700cf41dbc5c29c2dfdbb7f4bc7bfbce815bb
154 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, indicating a phishing attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded URL is likely intended to lead the user to a phishing site or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://traffmen.ru/aws?utm_term=format+of+undertaking+letter+for+job In PDF document text
    • https://cdn-cms.f-static.net/uploads/4403680/normal_5fad4536bac45.pdfIn PDF document text
    • https://gusumadanu.weebly.com/uploads/1/3/2/6/132695601/5282713.pdfIn PDF document text
    • https://dejolezeg.weebly.com/uploads/1/3/2/8/132815968/6506179.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490724/normal_5fb7f13ad247e.pdfIn PDF document text
    • https://bizetuxerupa.weebly.com/uploads/1/3/0/8/130873791/gisexoji.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446038/normal_5f9ffb17cd891.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443801/normal_5f9c656d0e519.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/45418c81-7d08-473f-9e40-ce13dfd0d225/difaku.pdfIn PDF document text
    • https://s3.amazonaws.com/kozewuposoridil/69290245394.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1390cc48-eb29-4592-855d-b4d54a89cd35/pizupuxepila.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90209a45-b151-4970-93d1-fdccd69bb04c/misepitobuf.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_off0000d6f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6F2 5284 bytes
SHA-256: f8c1573b2965e3db656284e5462e30cd6016e24ef0ad0d4313dad56a339a80a9
font_01_sfnt_off0000e8dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8DD 10624 bytes
SHA-256: 2e221052b70ed3d44edf859315a46deb885f0ce24d24a23431ce17cb6091e562