Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffc5d9cf7f96ca40…

MALICIOUS

PDF

45.0 KB Created: 2020-10-02 04:44:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f9deedcb3c436bb326ee00179234e09e SHA-1: 78f12a64bfa7ca3425d3994bde0033367d5ab954 SHA-256: ffc5d9cf7f96ca4072a304de1d2568ade777617f9661db09d1604ba3d3b5bdad
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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.
  • 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://cctraff.ru/strik?keyword=driver+wifi+netbook+acer+aspire+one+happy In PDF document text
    • https://site-1037005.mozfiles.com/files/1037005/79302397207.pdfIn PDF document text
    • https://site-1037010.mozfiles.com/files/1037010/kafamivatimagup.pdfIn PDF document text
    • http://fuzuduril.lukethominet.com/uploads/1/3/0/7/130775735/6178987.pdfIn PDF document text
    • http://files.artisticvegan.com/uploads/1/3/0/7/130739696/28a907cae.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://cdn.shopify.com/s/files/1/0433/6871/0300/files/15810084698.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0487/0976/3222/files/91287950915.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/0668/4068/files/mw3_ps3_hacks_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8215/4135/files/70461038248.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3ec3955-06ea-4238-877d-1ff94e80b6bd/48494838876.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c54a5171-5fc7-498e-bc3e-f0993e7ac523/34374295886.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/842509cd-5b99-48f8-a760-76cfd7ad6a38/polosipaniraliruwevoxej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2dfcd559-8485-4815-a3d0-623e03c3ca70/mafaxaniwapivolinuxejemaf.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_off0000589b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x589B 5316 bytes
SHA-256: 5698d97920e60ac04ea00e3946097586a5eacf070c5723759c57f341b9174c95
font_01_sfnt_off00006abd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ABD 14752 bytes
SHA-256: d8ed471752b9da578e6079b81b129194535f65d1dd69f1ba116eb88256b24fd2
font_02_sfnt_off00009900.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9900 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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