Malicious PDF — malware analysis report

Static analysis result for SHA-256 e39bfa9b12e9d5be…

MALICIOUS

PDF

42.7 KB Created: 2020-11-05 06:28:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 347a3c6efcc720beea4ac3f85f8f2080 SHA-1: d9c5a18596160ae00203d794d7221ab0b0832a72 SHA-256: e39bfa9b12e9d5bee954a317e6f3cd8b3c9931c0c1518ae7f6bdcccfb032873d
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.com/123?keyword=mr+kelly+challenger+middle+school In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366354/normal_5f9181860f8aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374848/normal_5f9eeeff5475f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367938/normal_5f87e2e8daf6a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460723/normal_5fa26fca58917.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366627/normal_5f87591794d47.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387821/normal_5f903060ee46b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406455/normal_5fa01612b6140.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In 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/b41a23b0-7081-4956-8d90-e4b1721f1606/raegan_revord_famlia_moderna.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a02e041-88e0-4c75-8e74-10db8dfa0cd0/magupebup.pdfIn PDF document text
    • https://s3.amazonaws.com/wexukufedepim/xofukidenibi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c4f3404-dda8-4cb1-8019-2abe997280d9/pokemon_red_rescue_team_codebreaker_codes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b8dc15d-1ab4-4efd-937f-0936786495d6/69341890263.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b38b9287-c85f-4566-832b-3d24893c650a/layers_of_the_sun_worksheet.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C76 1872 bytes
SHA-256: 82f30745d1fb873379318f2d42ec1cec373ed0047a72e384f79ae3fc36ffe934
font_01_sfnt_off0000656a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x656A 5524 bytes
SHA-256: 5b357d1bd22e6f4de558c3873b991145090eb01cd47ca01dcb5f870c70e35c43
font_02_sfnt_off0000781a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x781A 11132 bytes
SHA-256: a6e023bbaa41daed2e1daeddaae86c98282638c56fd285fbe828c28b690b3e48

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