Malicious PDF — malware analysis report

Static analysis result for SHA-256 752e545791265914…

MALICIOUS

PDF

73.6 KB Created: 2020-12-17 12:58:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 2064742906e6da33395a19453311b533 SHA-1: 877b713b83ea5ce6f48b7e4238b878ac17cc6c40 SHA-256: 752e54579126591457a45481847280e08809938e190c030fb09c8552ffd107f3
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The ML classifier also strongly flagged this PDF as malicious. The embedded URL, https://ggtraff.ru/123?utm_term=fau+football+roster, is the primary indicator of malicious intent, likely serving as a lure for phishing or to download a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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=fau+football+roster In PDF document text
    • https://cdn-cms.f-static.net/uploads/4489588/normal_5fd100cde37e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377407/normal_5f8dc161d3c83.pdfIn PDF document text
    • https://pudafakomixi.weebly.com/uploads/1/3/4/5/134506615/0363a62c1bdf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380237/normal_5f8c55b78f712.pdfIn PDF document text
    • https://pilidikuvitas.weebly.com/uploads/1/3/4/7/134766888/bufapivomolozog.pdfIn PDF document text
    • https://seririgikum.weebly.com/uploads/1/3/0/7/130739922/8811960.pdfIn PDF document text
    • https://nutolifawivu.weebly.com/uploads/1/3/1/4/131437776/nusukepijet.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc0e2c57848ba205d187778/t/5fc0f7c7f3de5e49b586fd0e/1606481863504/gamershood_point_and_click.pdfIn PDF document text
    • https://s3.amazonaws.com/nilititonawafim/18909150945.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_off0000e357.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE357 4856 bytes
SHA-256: 2c24fd2003876dc25e9bd7637553e66e72d59d8f5195639b1bf680c5a0adb9ea
font_01_sfnt_off0000f3ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3EA 10856 bytes
SHA-256: 7fa992900f9445130788e561a004cccd6970e8a25ec7e67aa6f709cb6edab985