Malicious PDF — malware analysis report

Static analysis result for SHA-256 46cae6d4d6e9fe28…

MALICIOUS

PDF

34.5 KB Created: 2020-11-05 22:53:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: db1c611c2d9c53e49f67178cfe933832 SHA-1: 3ac7fc3e7b751d80149d574e6e37d7a3d3f96b3f SHA-256: 46cae6d4d6e9fe282fce5166989f7d7ee634d4797b2bcdd9c3cff746b6252bb4
76 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains an embedded URL that redirects to a suspicious domain, identified as a lure for free downloads or phishing. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an attempt to redirect the user to a malicious site, likely for initial compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffe.ru/123?keyword=dewalt+dwx726+for+sale PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4409602/normal_5f9ae8d68a14f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393916/normal_5f9b8e96363ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379974/normal_5f8d11e12da28.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388289/normal_5f98f68a2bba8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368735/normal_5f990c162e698.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/8a121514-8009-4cc4-841d-9a40fc361485/werit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6912bf8-7dc4-4325-aa12-2d6401de23fb/statton_furniture_history.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32da1d8d-80ee-4dae-8377-ecd36147b2bc/lijanidolowejovinolumif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c811f1b-d0d9-4de1-bf98-6a716c561f65/15515619903.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8fa51d42-dc82-4713-b36b-691b67e2e636/unicorn_and_pegasus_called.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a89dc94d-23f8-4692-8ec1-27f989dce91a/26831242142.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

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004919.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4919 5424 bytes
SHA-256: 2c8936155a5d23fb1ae69452fdd63755c68e755162c4ea8df4ae49dbff75a22b
font_01_sfnt_off00005bc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BC5 9928 bytes
SHA-256: 3fb0d73eb9f1b74797111f42a700cede3378fff7a28da9607c67aa97f86bec8a

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