Malicious PDF — malware analysis report

Static analysis result for SHA-256 0982d3b55ca358ff…

MALICIOUS

PDF

50.0 KB Created: 2020-10-07 04:06:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 4da98cacf965fddb63d5821fcf5a41b8 SHA-1: bb9080f3e151d7a6ff209d6091d283e89e9da5ae SHA-256: 0982d3b55ca358ffa3360645e8f58f7624701a0bad5c62df9b5d28615adaa76d
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=fast+%2526+furious+legacy+apk In PDF document text
    • https://site-1036973.mozfiles.com/files/1036973/wudaru.pdfIn PDF document text
    • https://site-1036775.mozfiles.com/files/1036775/zotomolivokanezonixiji.pdfIn PDF document text
    • https://site-1043396.mozfiles.com/files/1043396/fevedikimixodugatonuvid.pdfIn PDF document text
    • https://site-1040766.mozfiles.com/files/1040766/zijazatisisagatozusavejad.pdfIn PDF document text
    • http://tibew.dominoeffectdjs.com/uploads/1/3/1/8/131856570/1b16c6.pdfIn PDF document text
    • http://files.rowdygainesmastersclassic.com/uploads/1/3/1/8/131872269/9217027.pdfIn PDF document text
    • http://files.humanities.shenfieldlearning.com/uploads/1/3/0/7/130740617/923464.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/1/0437/8607/6309/files/77650788814.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9433/4870/files/mekosategakivos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8976/2206/files/pibolekanutonisuwaza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/0683/2024/files/rowopisinojidamo.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_off0000806b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x806B 4500 bytes
SHA-256: 18a56111d9205b987a29c58219b62e9c32d84abdaa43a8e4b4815a80cac9c4d6
font_01_sfnt_off00008fc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FC2 14136 bytes
SHA-256: 674c54072da9281e6cb8c629b9e51eb238a6ba73139839dc2fef42301f12d43e