Malicious PDF — malware analysis report

Static analysis result for SHA-256 407ccd8113bf82a3…

MALICIOUS

PDF

44.8 KB Created: 2020-11-03 06:45:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 52050fecee9e3abb06e3efea48791eb6 SHA-1: b60787895592b87906c0c5ed6d8d85e90d633b63 SHA-256: 407ccd8113bf82a3b5be42e5034b6aff8e854642c490bd49953f815cbd7ba4b2
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.link/123?keyword=troy+bilt+service+manuals+online+free In PDF document text
    • https://cdn-cms.f-static.net/uploads/4418968/normal_5f95f35e4577a.pdfIn PDF document text
    • https://pigogokeda.weebly.com/uploads/1/3/1/8/131857695/kigipadud.pdfIn PDF document text
    • https://zeginuvo.weebly.com/uploads/1/3/0/7/130775519/acab2.pdfIn PDF document text
    • https://jezaxegare.weebly.com/uploads/1/3/1/3/131380636/8169730.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368493/normal_5f88dcaa36254.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366389/normal_5f8ec368823de.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423453/normal_5f982a82a5288.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367903/normal_5f94727b08755.pdfIn PDF document text
    • https://pazijovipa.weebly.com/uploads/1/3/4/3/134327002/1189382.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/93c94f3c-d9c8-4bc5-827e-31a8db97c7b0/video_shop_app_download_for_windows_10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/4517/4439/files/setup_outlook_office_365_on_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e909b5b9-1c44-4c15-94f3-d95a1577c6bf/28474812897.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96324b8e-e574-40ff-9359-e182625bc145/20270985842.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/010994eb-51de-4428-afbc-c91f893603a0/wemotu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/4764/7894/files/xajozujimi.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_off000061d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61D3 5160 bytes
SHA-256: dbae879aee697280c44eae10ccf0586a92cfe3725ef9c5c764ca69fcc92d79c6
font_01_sfnt_off00007356.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7356 10788 bytes
SHA-256: b3dc4916db1576c3f773897839f4acd7d427ab2ff7be65899e8d7a1cce25f11f
font_02_sfnt_off0000981b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x981B 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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