Malicious PDF — malware analysis report

Static analysis result for SHA-256 12b98872d66e9ea4…

MALICIOUS

PDF

356.4 KB Created: 2020-10-30 04:30:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 7f6dff0121c830b8eb7a5bb3fb8f5562 SHA-1: 4a6abccdb99725396736c5762490694e477bdef0 SHA-256: 12b98872d66e9ea477c41e388b16a3749bc6e28dbce897debde777deaeaddec2
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains embedded links to known malicious redirector infrastructure, specifically identified as a T1566.001 Spearphishing Attachment. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector, indicating an attempt to lure the user to a scam page. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

Heuristics 4

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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=different+facts+about+halogens In PDF document text
    • https://cdn-cms.f-static.net/uploads/4391009/normal_5f90b0c3a4695.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409813/normal_5f949a8d5dffb.pdfIn PDF document text
    • https://wefamojugibe.weebly.com/uploads/1/3/1/1/131164519/9b00d9d22.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404964/normal_5f92cb62bca19.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369509/normal_5f8aa33aaa7ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366978/normal_5f8cab1c6b0f5.pdfIn PDF document text
    • https://segawerod.weebly.com/uploads/1/3/4/3/134313685/68afb8f40e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365599/normal_5f8f4efab68a7.pdfIn PDF document text
    • https://malinozibide.weebly.com/uploads/1/3/4/3/134380659/mumimodilavotamo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374021/normal_5f8b43e394659.pdfIn PDF document text
    • https://pivuwexigika.weebly.com/uploads/1/3/4/3/134320842/nulawokerel.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/8394/4102/files/a_link_between_worlds_heart_piece_guide.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_off00054660.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54660 5280 bytes
SHA-256: e2c61da86a74e61e6c9d24d881a2c13b637dcd74913eaedb281f7b479ea2b786
font_01_sfnt_off00055857.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55857 12464 bytes
SHA-256: 03f0b65ae96c6bbc9f12dd473bbf38886602f0ea8eac8c2a5b411d605393f036

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