Malicious PDF — malware analysis report

Static analysis result for SHA-256 59ba3337f4af09be…

MALICIOUS

PDF

42.9 KB Created: 2020-11-01 22:52:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 81c6fbc1d026e82174c3cf6481f8b43f SHA-1: 84fdafb7e6d92e308abd51cea26394af5683ade0 SHA-256: 59ba3337f4af09be7d4e9b2b87261a40bc7002d6e1da567826543e7bc832db91
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://ttraff.me/123?keyword=about+me+fill+in+the+blank+printable In PDF document text
    • https://wejibuxod.weebly.com/uploads/1/3/0/7/130740202/7378932.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/6143103.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374853/normal_5f90ce5237215.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380213/normal_5f9046ff12f6c.pdfIn PDF document text
    • https://gemaxudemaxepeb.weebly.com/uploads/1/3/1/0/131070646/jopuvimilena.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/xumakomowi/fulton_mall_movie_theater.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/8219/4338/files/94996068552.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/como_converter_em_dwg_no_autocad_2012.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6626236b-5f84-4619-8d15-ff3ebc2aacc4/21400029871.pdfIn PDF document text
    • https://s3.amazonaws.com/jemazejodep/jagilidaro.pdfIn PDF document text
    • https://s3.amazonaws.com/wixamupelinere/build_me_up_buttercup_ukulele_chords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/9052/4318/files/ruvajupufujeko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/3936/5546/files/70026779220.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01f6d57f-a94f-4d6a-ac63-16fff580c5dd/25489716322.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_off000069a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69A9 5156 bytes
SHA-256: 4c210e091846c53394deb67b9d16d444ba87fa0db4b0ffee44e14253ce1190ee
font_01_sfnt_off00007b02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B02 10340 bytes
SHA-256: f03f82ab114a1c5224304329b31388c6dfd2d83ae54dd80b879bf5d38952cb6a