Malicious PDF — malware analysis report

Static analysis result for SHA-256 f060ecc659f4f074…

MALICIOUS

PDF

64.7 KB Created: 2020-11-25 05:35:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: c9157c65313741b0b070815ffe3a6e6d SHA-1: 22cdf1d7db2df905483c594cd8d21ffc3e64dc7f SHA-256: f060ecc659f4f0747b461d2f091dc435b61caa98bb485586594bbb13d0c690e9
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 0.9998

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://ggtraff.ru/strik?utm_term=fitbit+charging+cable+too+short In PDF document text
    • https://cdn-cms.f-static.net/uploads/4374374/normal_5f8a8a8af03a9.pdfIn PDF document text
    • https://tafuposavibado.weebly.com/uploads/1/3/4/0/134017079/7698617.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404313/normal_5f96770722aa1.pdfIn PDF document text
    • https://kafubururi.weebly.com/uploads/1/3/4/2/134235359/parevodo_kubitenubepetaj_juzuwogusut.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401985/normal_5fbabe5fda2ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454287/normal_5fb7614c6d153.pdfIn PDF document text
    • https://purowuma.weebly.com/uploads/1/3/4/4/134472698/siwawin.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369317/normal_5fa5720695ddc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503309/normal_5fae208b2f191.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390071/normal_5f92cd1538cc0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mipizaju/brahman_status_images.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/ravonedira.pdfIn PDF document text
    • https://s3.amazonaws.com/zufojadibi/t_chung_co_sold_a_computer.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/english_aptitude_tests.pdfIn PDF document text
    • https://s3.amazonaws.com/tibitexil/centerburg_high_school_athletics.pdfIn PDF document text
    • https://s3.amazonaws.com/lebaxa/64057975723.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_off0000bee6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEE6 5156 bytes
SHA-256: 2a7c0c8217bd28e6333077f581f5e8499570935d7a5092b61a43c1244944a909
font_01_sfnt_off0000d06a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD06A 11088 bytes
SHA-256: 395eb3f6b7e842d9dde7ee5c54b7836b7fc609c1423f12a14b9b54b60c0fa26d

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