Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd059d05cf07adc0…

MALICIOUS

PDF

50.1 KB Created: 2020-11-06 22:22:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 81f6c2bf30c724501ca648c1fe756c72 SHA-1: 2b6e990c47c92cecc09a6b0314718b88425a1907 SHA-256: fd059d05cf07adc0b15097bc4dbba77c91bee8d2246a27e2a5705d0e2ac40895
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded link suggest a malicious intent, likely for phishing or malware delivery.

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://traffmen.ru/aws?keyword=ilauncher+ios+apk In PDF document text
    • https://cdn-cms.f-static.net/uploads/4383692/normal_5fa40bd3e1043.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/af3b7b07-955c-46f1-bcbc-78803c7a8760/manual_dmv_california.pdfIn PDF document text
    • https://s3.amazonaws.com/pafiganovavi/hotel_rwanda_guided_questions_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/legenapi/votafavotipalatup.pdfIn PDF document text
    • https://s3.amazonaws.com/jufowokedunod/xezifanaxuwure.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76c3591f-b675-494e-8a9b-93f9ab1a6269/9951337000.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6c72d9e-27c2-405e-af16-edc3a790f370/maze_runner_the_death_cure_book_report.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/46175135880.pdfIn PDF document text
    • https://s3.amazonaws.com/petuzutemixuvod/22188710694.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16696cf5-ef14-4324-b4cc-b28924483374/fulemiwutog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76244add-fae4-42e2-a79c-effd59b14a7d/tefilegusibomibom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5d3f1a0-f3a2-4800-9e6a-21d2041afe08/52894718322.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9cef1e26-e164-4f00-942b-f75eddfd2279/4833432998.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60CC 4824 bytes
SHA-256: 84f16c2b4aaf19bf5fdd05fcfa229d150522772437ea94d0e57fe65c8d937b1f
font_01_sfnt_off00007110.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7110 10588 bytes
SHA-256: 39bde19232f10d6baf1a154e65d9ffc6f0ab528e906394ea7505f536b828b5a6
font_02_sfnt_off00009553.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9553 16992 bytes
SHA-256: 6d22609f17725ec8a2929f72a3e0edc41fda71f97c424b8ffd5b8dab297a8b27
font_03_sfnt_off0000ac01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC01 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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