Malicious PDF — malware analysis report

Static analysis result for SHA-256 29bd9d36426ab16e…

MALICIOUS

PDF

41.1 KB Created: 2020-11-06 20:44:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-19
MD5: 965bb7e5f9fa045510fad0781e2ec2ed SHA-1: 2e68a91016d78bb2e212c0e1d18018007214db7b SHA-256: 29bd9d36426ab16ec28529924e41c1e9a2ccd03f0bff5b24e3f25bf1c72a277c
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://traffking.ru/aws?keyword=staying+fat+for+sarah+byrnes+sparknotes In PDF document text
    • https://meboguvogo.weebly.com/uploads/1/3/1/4/131437667/da583aefe0436.pdfIn PDF document text
    • https://dokakida.weebly.com/uploads/1/3/1/3/131380589/33e165fce2.pdfIn PDF document text
    • https://xigokerurubupa.weebly.com/uploads/1/3/4/3/134312623/gutewodonud-jusinavifis-nekaj-sokolowirib.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/memul/xekodal.pdfIn PDF document text
    • https://s3.amazonaws.com/kigavanus/80113514505.pdfIn PDF document text
    • https://s3.amazonaws.com/kijelopazekune/what_season_did_jason_gideon_die.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83da3467-fa40-42ed-a1f0-3cdb79946fd3/chaos_seeds_book_8.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb89de53-5da1-4530-91f8-32af7cee835b/dowelilifosomuditiwadujat.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/74896602022.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a3e21ff-022c-4510-b5a5-e28f5ccddcfd/la_mariposita_est_en_la_cocina.pdfIn PDF document text
    • https://xeruluzolu.files.wordpress.com/2020/11/xezejazod.pdfIn PDF document text
    • https://suvarofora.files.wordpress.com/2020/11/95519257918.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_off000062a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62A0 5540 bytes
SHA-256: beaf589f3cfbe34758c3fea227f27f23825182674e612c4a78e54c2124e7f77e
font_01_sfnt_off0000757a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x757A 10228 bytes
SHA-256: ad537cef95dfe8bbf1a4c2c6a9f8381d3471c4e7863294ad14dcea0b4a477123