Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ba8ec88cc3b7d41…

MALICIOUS

PDF

41.6 KB Created: 2020-10-03 17:14:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: be14aa33d3287628aef73a9fbfd456c0 SHA-1: 604edf78c62bde997cf7bb91aae8b69256c14eea SHA-256: 3ba8ec88cc3b7d41a26ec055cdf1bf7532833732f9dbbd7f433f553f7bffcaf2
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://gettraff.ru/pify?keyword=active+warrants+in+youngstown+ohio In PDF document text
    • http://siwid.shschoir.org/uploads/1/3/0/7/130775350/63b5bb8d7eadbd8.pdfIn PDF document text
    • http://files.cailliemutterback.com/uploads/1/3/0/7/130776601/nemanapanole-jevusikiw-rikinigiz.pdfIn PDF document text
    • http://mojisiv.nataliemarie.org/uploads/1/3/1/4/131437502/kufixawaro_zopamisire.pdfIn PDF document text
    • http://suxob.goalfitnessactivewear.com/uploads/1/3/1/8/131872225/datizilusojudek_begudid_xinogu.pdfIn PDF document text
    • https://site-1037224.mozfiles.com/files/1037224/79048110820.pdfIn PDF document text
    • https://site-1036745.mozfiles.com/files/1036745/gokagazuwemusifezawudo.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/1/0433/0127/3758/files/doterra_microplex_vmz_deutsch.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1655/2605/files/kukabo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/5557/3909/files/nevada_state_board_of_cosmetology_license_search.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4394/5622/files/sushi_menu_near_me.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_off00006525.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6525 5272 bytes
SHA-256: 13eee7155dff6ca5b852c847d439f56aaa2c58c280ea8b9dd89201be14cd7b08
font_01_sfnt_off0000772b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x772B 10020 bytes
SHA-256: ca21bf046d24b104f56e381e8624d095f7ebbfcd58a706b98dab05f67a0c4593