Malicious PDF — malware analysis report

Static analysis result for SHA-256 b015d4a67a39380f…

MALICIOUS

PDF

69.2 KB Created: 2020-12-08 04:48:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: f186ad89c1e7ef1f2b2162aeb874ffd7 SHA-1: 6a0c6c1d3671d985d41c94fa4b929425e554827b SHA-256: b015d4a67a39380fb227d035812202bd4894d49f45ada76df139b01a57dac528
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-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=scripps+ranch+high+school+staff+directory In PDF document text
    • https://cdn-cms.f-static.net/uploads/4424405/normal_5fbc247554ed1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387035/normal_5f9a07ab5700a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480170/normal_5fb83bd353be5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365656/normal_5fa06270488af.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403819/normal_5fbd1e96d938b.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/5fc0d3b00b6b03258f353712/t/5fc235fe3f75b166431dab44/1606563326515/67478637190.pdfIn PDF document text
    • https://s3.amazonaws.com/damerirazib/50503416297.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc58068ea4a794d56645aa6/t/5fc8ba098bd7793567580f96/1606990350668/harvard_business_manager_digital.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc789c343c5ee75bf2cc63b/t/5fc975d456e7c50656c24b50/1607038421035/farm_heroes_saga_vs_candy_crush.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf59603c02f22b9d047ae6/1606375779446/67692321244.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd12a14397200107e1a887/1606226594893/xazitogejabasonuf.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc557811c8c7413144f8578/t/5fce0bcd83d2ac65cc39c72e/1607338957332/37957967241.pdfIn PDF document text
    • https://s3.amazonaws.com/bulolimepol/64895034267.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7a9ace9133927d9103a50/t/5fc82875e101942bf765e6a3/1606953078815/amazing_gangster_frog_2020_simulator_city_port.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc50ba1a87939686422cdfb/t/5fc6eea848d5672cfb30e6d4/1606872745259/josikolebadenifodapaz.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_off0000cf2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF2F 5620 bytes
SHA-256: ecdfd7ef488b6486a45df9ce4d100176775d5f1ba392200e6c1c26c0c48be053
font_01_sfnt_off0000e24d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE24D 10880 bytes
SHA-256: 85009ad72948ce0d7f3b0c69b037f9942ae48b2f66083a5cb245b17b8a165bfa

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