Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab995f2aa3332b66…

MALICIOUS

PDF

51.9 KB Created: 2020-11-01 04:27:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 2627166e9d69dd30e96490e18c9f5892 SHA-1: 20a14972be48ca79f5bbd32de9e3bec9ecc96751 SHA-256: ab995f2aa3332b666903999056e0d8c752cffd0d30439687a2b86fc85541e286
94 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 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 1.0000

Heuristics 3

  • 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://cctraff.ru/strik?keyword=breath+of+the+wild+recipes+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4387219/normal_5f8d0269cf48e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370309/normal_5f99f5273a209.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404964/normal_5f9287f04b459.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369633/normal_5f89074d28186.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411001/normal_5f97dcc377b39.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365646/normal_5f9cab79e63bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387921/normal_5f98bdd5990dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375357/normal_5f9a70e7e314e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366375/normal_5f8ba6e5c86e1.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/buganabowumujef/tj_eckleburg_quotes.pdfIn PDF document text
    • https://s3.amazonaws.com/guvovigo/41401665067.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/ahmet_hamdi_tanpnar.pdfIn PDF document text
    • https://s3.amazonaws.com/fenatagazise/arbitration_and_conciliation_act_1940_bare_act.pdfIn PDF document text
    • https://s3.amazonaws.com/susonanezaj/capitalismo_gore_libro.pdfIn PDF document text
    • https://s3.amazonaws.com/jikopot/medusa_turritopsis_nutricula.pdfIn PDF document text
    • https://s3.amazonaws.com/muxegeza/simple_bending_equation.pdfIn PDF document text
    • https://s3.amazonaws.com/pesetufavo/todevid.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000074b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74B4 5384 bytes
SHA-256: c732bf94878059de145d96cc60e9782ed8e1eb25221c39314eeca0615dc9e89b
font_01_sfnt_off00008714.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8714 11764 bytes
SHA-256: 9d11aaf724f2d01069ae588810e8fdb2adf2ae1d3522a7e58a74fc7c8dac1081
font_02_sfnt_off0000ad6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD6E 16164 bytes
SHA-256: d781c508aaf473e50263a6aabc3f4161b7fa10724c54bb8d35addee38a7f1c44

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