Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5c47d76483da7ac…

MALICIOUS

PDF

34.5 KB Created: 2020-10-02 12:17:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 08afbc62a13e01dd1608cb73542ec779 SHA-1: ec23ec0ad00ae970b8cf7e10a3393b10569d377c SHA-256: e5c47d76483da7ac34e897d5121c9dd2f65cf4a8f6e135f84f4f0ef136feb0bc
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://gettraff.ru/strik?keyword=subjunctive+mood+worksheet In PDF document text
    • http://zebosula.banyantreesamui-cuisine.com/uploads/1/3/1/4/131407668/279aea76ec27.pdfIn PDF document text
    • http://veralur.aniasorganics.com/uploads/1/3/2/8/132814930/nujagiridebazuzoz.pdfIn PDF document text
    • http://files.alifeworthliving2.org/uploads/1/3/0/8/130874318/lenalaw-fowez-legojumafixixin-tunotababivofen.pdfIn PDF document text
    • http://files.kelleyintegrity.com/uploads/1/3/1/4/131483372/xovexogu.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/a6445225-abec-40a2-89ea-79ffa7d6a4b5/vorujigesawifatas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a7aa1ef-7a76-441f-91a5-14adfde81331/gozufux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6183/0037/files/swot_analysis_for_google_ads.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2989/1742/files/69622531076.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/0055/3635/files/61267209927.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6688/4250/files/sangre_de_drago_benefits.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2725/7749/files/84281718923.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_off000048f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48F9 5472 bytes
SHA-256: 73f4a7f5f3cf298ed70afa8a38dd84fcce1e66943edf7cdd9129ff6954afba93
font_01_sfnt_off00005b85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B85 10036 bytes
SHA-256: a390d51340530385daa60ab183d7353e7cd4687715d85ce188726bdb53e7abb8