Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ebc872f5bdf784a…

MALICIOUS

PDF

69.5 KB Created: 2020-12-15 01:47:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 4b5057d08a06639d4a6b3799cb607dae SHA-1: 919f50a126b774a0f0197f93541dc3fad8bea3cb SHA-256: 3ebc872f5bdf784aa6b8037dfd5e3a0dd7e5c21f98cd6ba42042f61b8b4de488
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://gettraff.ru/123?utm_term=classic+shadow+priest+talents+leveling In PDF document text
    • https://static.s123-cdn-static.com/uploads/4404313/normal_5fc6f52f59702.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408866/normal_5f9668fdd5352.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426813/normal_5f9a9fe475a70.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384029/normal_5fbbf592c2473.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448346/normal_5fa361f5e5808.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501037/normal_5fd24deddf9c9.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/43332f0e-166f-4bed-bbff-a8e313719b2c/case_study_of_gifted_student_and_achievement.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc50e1111f6a41984a06ac5/t/5fcb9e2aa51c5a1401ad4a96/1607179819798/movies_2019_comedy_romance.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd31bcb8-56a4-42a6-a212-178661743bd0/aace_international_cost_estimate.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0cf572b3-c920-43cd-ae85-8f433265bbe6/kijusoze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0e6985e-a1e1-4c01-b1de-5761af8a1cab/simmons_truplex_riflescope_3-9x50_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eed52a6e-515d-46e4-ad8f-17b4eb27e97d/offline_rpg_apk.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_off0000d2e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2E8 5392 bytes
SHA-256: cc8689e9a65822a16345c3f6f948d67958e4ec95889bc18a926cbf0f2779e619
font_01_sfnt_off0000e54b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE54B 10540 bytes
SHA-256: 1d8ff7e156452ff020f3ef6154cf33d41e9c23cb4fccadfa7202b4e379b0f51b

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