Malicious PDF — malware analysis report

Static analysis result for SHA-256 74e8d53e1b4e65f8…

MALICIOUS

PDF

72.3 KB Created: 2020-11-19 04:39:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 47fcca00d10096c039ac81782cb4a030 SHA-1: 3a2303f25ffe19788d81b7aaad07f12df1fa9037 SHA-256: 74e8d53e1b4e65f80fad29a82fc78c311796f55b9bfe635b7185439ecceeff16
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URL that points to a suspicious domain, identified by ClamAV and ML classifiers as malicious. The PDF's structure and embedded content suggest it is designed to trick users into visiting the malicious URL, likely for phishing or malware distribution. No scripts were extracted, but the presence of the malicious URL is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffset.ru/123?utm_term=custom+roller+skates PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4370740/normal_5f8a0a7fefb74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393908/normal_5f96d8bc0277d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368495/normal_5f9377d418125.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408475/normal_5f9fe0125d3ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467007/normal_5fb29a83d15f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408177/normal_5f9e23a6cf696.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/fd9d7a4a-ceec-4851-ae12-908d560599ec/56494676733.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b83c3bb3-4edb-450a-9384-707d5ed60be8/4863492750.pdfIn PDF document text
    • https://s3.amazonaws.com/pomaxa/iata_dangerous_goods_regulations_60th_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/16115351801.pdfIn PDF document text
    • https://s3.amazonaws.com/pazerogasarinu/92474394111.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/begone_satan.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_off0000defe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEFE 4800 bytes
SHA-256: 34f6ef8c14f092fecf889e3ba3057c5b3c80d57937a3633a73b7d0542e67fdf1
font_01_sfnt_off0000ef2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF2E 11092 bytes
SHA-256: 92cf883937c24b4d6e8cc9fc3fbd6a0cef774cf66f62c8ec9b5209aceb746a28