Malicious PDF — malware analysis report

Static analysis result for SHA-256 96276a1211115f7d…

MALICIOUS

PDF

75.5 KB Created: 2020-11-22 13:49:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: b4913cea8abc04a208dc25375e7c0cd0 SHA-1: 2b050419e75d50307f10d43fd71edcc46bc4cf7c SHA-256: 96276a1211115f7d90db75f89396f9448cd081a5661b3fd4b4b5fe6bed5832b1
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 0.9998

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://ggtraff.ru/123?utm_term=mecanismos+de+trabajo+de+parto+slideshare In PDF document text
    • https://cdn-cms.f-static.net/uploads/4502500/normal_5faf6fe3ebbab.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/kewuxejikiwe/6614594633.pdfIn PDF document text
    • https://s3.amazonaws.com/tudawufed/jujexokiwomu.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/examples_of_transverse_waves_in_real_life.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b10e6f80-bbad-4e59-831b-60783a993219/47008259135.pdfIn PDF document text
    • https://s3.amazonaws.com/wejalixex/rojunukaneduvowakijedaxi.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/popawuzupefizudoni.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubatebedoxez/xaboxazelaxesa.pdfIn PDF document text
    • https://s3.amazonaws.com/gonafoziguwewe/aluminium_sheet_4x8_feet.pdfIn PDF document text
    • https://s3.amazonaws.com/tunenijexe/starry_starry_night_chords.pdfIn PDF document text
    • https://s3.amazonaws.com/wotodedaruzuk/greska_tibiofemoral_rotation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7baa3244-7a70-4e7b-8454-57fd041069d6/24065540339.pdfIn PDF document text
    • https://s3.amazonaws.com/genukopapovixo/best_malayalam_songs_2019_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tesotiwapax/bijekibegixaxanekavediki.pdfIn PDF document text
    • https://s3.amazonaws.com/lakadutof/aldi_ambiano_air_fryer_review.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_off0000d394.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD394 5532 bytes
SHA-256: 026a9bc8475ddf9444043c4a43fba16d879142fca090b5fc13bbcb1c2970421b
font_01_sfnt_off0000e63b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE63B 11472 bytes
SHA-256: 324e1ad927e5e5b33f5378d77fdc636d673ad76005ac2f628dd6c48a3fd4e991
font_02_sfnt_off00010c03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C03 16096 bytes
SHA-256: 9853a4a918762215dfcba51349555ff48d39e56332efe18e2f333ca30d8a5b61

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