Malicious PDF — malware analysis report

Static analysis result for SHA-256 30052d949b361a16…

MALICIOUS

PDF

45.2 KB Created: 2020-11-06 00:37:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 61eac6284a80fdb9ef457d9fc65a141f SHA-1: 5db9cc22d594e83917c0195fa4c5c902c5a50f0c SHA-256: 30052d949b361a168c59b1875e9f1d7611f6ecf3de79d0558778e0989492e282
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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://trafffi.ru/aws?keyword=it+executive+resume+summary+examples PDF link annotation
    • https://lotogifivetizub.weebly.com/uploads/1/3/4/3/134309957/578c5.pdfIn PDF document text
    • https://gudojovevisepu.weebly.com/uploads/1/3/4/3/134314990/695d13095ba1c1d.pdfIn PDF document text
    • https://morurotefat.weebly.com/uploads/1/3/4/3/134317018/ac1f08433.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zobuwubedak/gozopogoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61ec91c8-55d4-4343-be67-04307ffcb2ce/12630403669.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb83b338-6baa-4d4a-bc61-8b8a501a23ca/xolexixexoxur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6dcd245-9d96-4290-ab16-770563fb2827/3307164194.pdfIn PDF document text
    • https://s3.amazonaws.com/votawawo/funaruzubovetupoje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92bd2a26-bfed-4b07-bb7c-fe24291b571c/into_the_jungle_sean_carroll_chapter_summaries.pdfIn PDF document text
    • https://s3.amazonaws.com/mazugezijap/nyc_michelin_star_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/fidefofudi/zijabozebiris.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_off000070d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70D2 5248 bytes
SHA-256: 2afd5054c73267c80fdf10b59bff0eff92f4a373b3045356c4da597acdf6af27
font_01_sfnt_off000082a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82A3 11124 bytes
SHA-256: 31f427dde1683c31fb7643d86ee55fe80247efd48347e06ea68dbe49d3a536b1