Malicious PDF — malware analysis report

Static analysis result for SHA-256 25f28283c1c5b871…

MALICIOUS

PDF

45.0 KB Created: 2020-10-30 13:43:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: d2104409dab17170654d32d03a2aea85 SHA-1: bdb73d4da4e2ed22be9c54f21fe7098c1fa9420c SHA-256: 25f28283c1c5b8717191aefd403861bceb65c933a31cb8d222bff5447b839d6c
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://ttraff.link/123?keyword=the+complete+prophecies+of+nostradamus+of+1947+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4378390/normal_5f8a2251debe6.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/116c6ec2-dba3-4f19-b0da-372b480016e4/58733707275.pdfIn PDF document text
    • https://s3.amazonaws.com/gofilafixu/venasurida.pdfIn PDF document text
    • https://s3.amazonaws.com/gafedupeba/seven_brief_lessons_on_physics_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/tosevud/ligojinomeludakij.pdfIn PDF document text
    • https://s3.amazonaws.com/bupijila/arnold_swansinger_movies_sheriff.pdfIn PDF document text
    • https://s3.amazonaws.com/bokexizometun/muligeweb.pdfIn PDF document text
    • https://s3.amazonaws.com/vetamedisoz/jekuzeniguwegilesomuve.pdfIn PDF document text
    • https://s3.amazonaws.com/tulosa/types_of_alternative_assessment.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/anesthesia_and_analgesia_in_laboratory_animals.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_off0000706b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x706B 5720 bytes
SHA-256: 1c36d58985cb57f620c7c1bffb3ac499be500190060afe20c13bec8286ff3dda
font_01_sfnt_off000083ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83BA 10408 bytes
SHA-256: d315dae35f635459187c37149a555d1b5390f70248ebace77ccd85564f9c9abf

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