Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f6e62a6f8f64b84…

MALICIOUS

PDF

34.7 KB Created: 2020-10-08 20:48:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 11e30902fd399b0cc1dcdcad5d82fc62 SHA-1: 9004f0fd7bff4b90e2452375f6d8f8a011ec7bab SHA-256: 8f6e62a6f8f64b841f5997bca113d3b6ae0632ca09abc4cf24b13bbfedc5883e
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/pify?keyword=app+hdfull+tv+apk In PDF document text
    • https://site-1038614.mozfiles.com/files/1038614/71372425100.pdfIn PDF document text
    • https://site-1039380.mozfiles.com/files/1039380/92433798495.pdfIn PDF document text
    • https://site-1041785.mozfiles.com/files/1041785/sebapikexupaw.pdfIn PDF document text
    • http://files.tishthawer.com/uploads/1/3/0/8/130814729/8150858.pdfIn PDF document text
    • http://files.ponyselectbaseball.org/uploads/1/3/1/4/131452804/3515750.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/b5af7e62-6c9c-4af2-a8b9-ab9cbc8c424c/88025282745.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15648343-481e-4d67-99c9-96561aba87aa/30510494743.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd97126e-2d9c-4759-9375-adcbba11b191/sajid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90b67a83-8062-4f95-b610-208b0c2b8fd0/96435374391.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91d4b56c-5d6f-4a85-bc1d-2366c60b7d97/gajibegoxevib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb4d932f-d8a2-4a0e-a04c-93cc8372fe0e/ditimugebegisakobane.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 8

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_off00004b21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B21 4968 bytes
SHA-256: c1b9db446e90da20f72df7a3a4df4560021f325bd3515c0d51bb2c99632998b7
font_01_sfnt_off00005c15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C15 10008 bytes
SHA-256: 9a980bd51a85444b906c02b58179ca25c98af8ecc54218cc89f1b26a754f542a

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