Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc79f74c14f02f87…

MALICIOUS

PDF

36.7 KB Created: 2020-11-02 22:43:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: d2e0d1014618e9ace2ff9223b4a97665 SHA-1: 5d5b81130251062d1ff72d6792e75677b73727a4 SHA-256: fc79f74c14f02f87ae9a6ce463488d134e0f9f613b8e102147e710a6abbede97
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=rudram+chamakam+pdf+tamil In PDF document text
    • https://povutepumik.weebly.com/uploads/1/3/2/7/132741486/likal-damaxawi-kakoguxuratisiv-dobutivigila.pdfIn PDF document text
    • https://fidurelofomus.weebly.com/uploads/1/3/0/7/130740547/lizarizanivedena.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d4afd30-bdef-4e06-8a3c-f62c436d9434/growth_mindset_posters_math.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/795d3c7a-8519-4a3d-bd3b-40d97993f19d/sia_cheap_thrills_mp3_download_free_320kbps.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/4041/1325/files/sample_of_dare_essay.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0173ea5-40ae-482b-ad64-c0b9991b124e/butagarumiruket.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9412de38-5288-476e-b925-45856532a308/12304198958.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0a89b31-799c-4dfe-a142-99ce8a7be567/baixar_filme_o_poder_do_ritmo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90bd227d-584c-4f5c-a6a9-9c7ef9baf2de/2792786917.pdfIn PDF document text
    • https://s3.amazonaws.com/zomuzigo/86472099596.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4108690b-1974-4dda-b6ba-55378b46004a/population_genetics_worksheet_answers.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_off000048fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48FC 5288 bytes
SHA-256: a3f165178e01301d7a7570662de9c86f8f6979393a5d61af082aac1c733dc2f1
font_01_sfnt_off00005acf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ACF 2140 bytes
SHA-256: fd0baac36cf8fc893687cbe6b3b8165417b6c4fca046c9a5e64821bfdf5295b8
font_02_sfnt_off00006443.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6443 10656 bytes
SHA-256: 612655cb73e9e0f531deaa3b1d158a0a88d77915d4294a96b2f2f272c79e0cf0

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