Malicious PDF — malware analysis report

Static analysis result for SHA-256 90293708ca38c3f2…

MALICIOUS

PDF

74.7 KB Created: 2020-11-11 06:55:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 6dc8f39e88897f13b7d58df29f8bfa81 SHA-1: 9db53fdf16ece919ca0ced81b7e1b03169cf251c SHA-256: 90293708ca38c3f2785eb997735c56361ad6fb8c67d8338f2d0b1432d6dc1dc2
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • 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/123?keyword=proving+triangle+congruence+worksheet+answers In PDF document text
    • https://vewutaniwem.weebly.com/uploads/1/3/0/8/130873717/lilosejasafitiz.pdfIn PDF document text
    • https://tugivopufik.weebly.com/uploads/1/3/4/3/134348802/4666517.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377095/normal_5f9832cc73df6.pdfIn PDF document text
    • https://tibijipobarak.weebly.com/uploads/1/3/4/4/134493900/1681887.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376869/normal_5f9d986f226b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371553/normal_5f9528fa62b2e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368494/normal_5f8f7629a4833.pdfIn PDF document text
    • https://fukikabigo.weebly.com/uploads/1/3/4/4/134457586/221ff1d70bba6.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/82e46bda-ab77-41e7-977c-f19ac3f6153a/xilegumiborosalikolilelup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ccbf7ae6-a6c6-4ca1-8b76-45da5d031174/tesule.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f52a7f0-752d-418f-99e9-6b1a54719615/fufizagafijasexiwub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9d211fc-9076-45fa-9c01-c93d118fb099/givuzojosipija.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94a3b4f2-c188-4974-80dd-71b671def988/22524682455.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ccb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCB2 5280 bytes
SHA-256: de39937de8042c3045f38d71e5bd001c7773c001929cdf68e6e9379ee5287ba5
font_01_sfnt_off0000deb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEB6 12156 bytes
SHA-256: 90473c88eb2a5d17a79b05e617a9660b202befe963881ff7eadb8164684fcc77
font_02_sfnt_off000107ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107EA 16208 bytes
SHA-256: 3b880ae8b046db85d3eebc4a95fc0ab9d4b5f015cb69e0a38438a493accdac43

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