Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9d7f4ee5fd7ca8a…

MALICIOUS

PDF

76.7 KB Created: 2020-12-17 16:29:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 1e8773039481e4a089d1cfbb07a0ccbe SHA-1: 102e9b9f81d1feec54fe15a217eb6dfad887bc98 SHA-256: f9d7f4ee5fd7ca8a3cac5ec9cb40e644f0a1a2578d1608782f854a52a5f5caaa
154 Risk Score

Malware Insights

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

The PDF 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 the primary indicator of compromise, likely leading to a phishing page or malware download.

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
  • 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://ggtraff.ru/123?utm_term=imagine+life+without+education In PDF document text
    • https://cdn-cms.f-static.net/uploads/4375350/normal_5f92724c78f9b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476443/normal_5fd5fb2e8eb99.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381320/normal_5fa4672b9dbf5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366984/normal_5fad51d50c479.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458614/normal_5fdb0ba46724d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389361/normal_5f9ac9f6ac759.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478928/normal_5fbea5c5bbf7b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418401/normal_5fac0e962bd6e.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/fb655de6-65b9-416c-b6ac-fb5e48c60939/42538534301.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0fe012e537a05ef0995e2/t/5fc20ca95147b148047a2d50/1606552746542/xalatenuruzosoworev.pdfIn PDF document text
    • https://s3.amazonaws.com/bupesejirijejus/jasper_reports_odoo_example.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_off0000f164.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF164 5188 bytes
SHA-256: 635eecb588798f8e9f8443b14d8fa1b5dcc6e539e4b6d3433fe4e2aadd5e214e
font_01_sfnt_off000102f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102F7 10288 bytes
SHA-256: bdd5ea22a217204fb65252802ded0e2c99944a2878a990a4400337cdce76d82d