Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb8f7399b1aabc0b…

MALICIOUS

PDF

46.6 KB Created: 2020-10-02 23:53:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 8e901760c06d680227edc7ae2db6d31d SHA-1: cc53d7726138c89550edee5f7f5bc2ee3ba6b6d2 SHA-256: eb8f7399b1aabc0b24bdd0cd9026b75cb949b44d89416740379bcc18071813f5
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://ttraff.club/pify?keyword=lavergne+high+school+principal In PDF document text
    • http://vitakal.ilovetheglassonion.com/uploads/1/3/1/6/131636772/rujebasokifadusijad.pdfIn PDF document text
    • http://lodope.jemurphyla.com/uploads/1/3/1/0/131070381/juruzijik.pdfIn PDF document text
    • http://files.loftconversionsderby.co.uk/uploads/1/3/0/7/130775719/5602508.pdfIn PDF document text
    • http://tamewopul.cheriegrist.com/uploads/1/3/0/7/130776445/sigeres.pdfIn PDF document text
    • https://site-1038783.mozfiles.com/files/1038783/gutibulo.pdfIn PDF document text
    • https://site-1041864.mozfiles.com/files/1041864/jojagufalumemepi.pdfIn PDF document text
    • https://site-1036811.mozfiles.com/files/1036811/15212953207.pdfIn PDF document text
    • https://site-1039847.mozfiles.com/files/1039847/93654104380.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/1/0434/8654/4022/files/funny_words_that_start_with_g_to_describe_someone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9068/2783/files/how_to_hack_star_girl_with_lucky_patcher.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6558/0437/files/xukudumegitegawajorawo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9360/6046/files/37932789277.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/3683/0624/files/iron_man_mark_43.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/2240/0674/files/microsoft_windows_search_filter_host_windows_10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4523/1509/files/nba_teams_in_alphabetical_order_2020.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_off00006cd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CD9 5196 bytes
SHA-256: 2d3bc489c9a4a2b62041d0b01a2f89549a50f375c4da4f62395585405b3810e5
font_01_sfnt_off00007e93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E93 15116 bytes
SHA-256: a9036bfd8ecc8b83f7d75edd6d619067dbf85c966cad23591d12ffd887b2362b

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