Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ac10c48fd948f38…

MALICIOUS

PDF

43.0 KB Created: 2020-11-01 19:22:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 3c4e3ab64b114751db6c9065dd928beb SHA-1: 4578e89939ba65e7a5a9c31e52ceccc2b0eb96f9 SHA-256: 2ac10c48fd948f380ca918f62dad0a2376cf18c0ef96d2c93c4f57778307c224
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 infrastructure, identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The ML classifier also strongly flagged this PDF as malicious. The embedded URL 'https://gettraff.ru/aws?keyword=clinton+school+for+writers+and+artists' is the primary indicator of malicious intent, likely serving as a lure for phishing or to download further malicious content.

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://gettraff.ru/aws?keyword=clinton+school+for+writers+and+artists In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370263/normal_5f9b5b3fccb71.pdfIn PDF document text
    • https://guridawado.weebly.com/uploads/1/3/4/5/134578433/sodadunam.pdfIn PDF document text
    • https://mututekabifu.weebly.com/uploads/1/3/4/4/134466573/wibuwekepifa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369507/normal_5f8a5a42bb670.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/9abc5a55-6570-4a24-8074-0c3b8428a6ab/60383302919.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4631de4e-fbed-4ce7-9648-b80e1ab152d7/giloxuridozi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ba7d9c5-051d-45c2-8556-07f3f3f8532b/16942346032.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/7777/8584/files/wolfgang_puck_bistro_crock_pot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/064d4a2a-c9c9-4c86-9e2d-7729004d316a/ponujekubavenotafewogi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0507/8463/3003/files/jeppesen_charts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a5fead4-c85c-41af-94c0-7e8daf0ab432/1797400509.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/0494/3295/files/wigidexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/5171/7286/files/formulaire_attestation_pole_emploi_vierge.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/266bc0bb-8ba8-47fc-a741-ae3ee85760ad/pubewokikipirazi.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_off000067de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67DE 5108 bytes
SHA-256: e674e9bab0e9f17645b024f21dad874d2cdc84af845d8226aa9eec41ec4c6b46
font_01_sfnt_off00007946.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7946 10900 bytes
SHA-256: 512747f04ea2520ca0218a73f4f62d098b59bec25017223d930afadac9e1c6ce

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