Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f2251692b048c6a…

MALICIOUS

PDF

37.2 KB Created: 2020-10-07 21:56:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: c238800b6db34d047073c1848597cb7c SHA-1: 3326be507f19e0cf2b5d698c8bbb4b14703b56ce SHA-256: 6f2251692b048c6a84b5cd4f81f5adc3dc7f374235cd00fcd4da600d0df83495
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=nitro+nation+cheats+iphone In PDF document text
    • http://seluzo.genawave.com/uploads/1/3/1/3/131398177/detanu_kavawape_zopenuri.pdfIn PDF document text
    • http://wadajata.vocalupholstery.com/uploads/1/3/2/3/132303382/xadakusobujujozezita.pdfIn PDF document text
    • http://files.riverbendoutdoors.com/uploads/1/3/1/3/131379099/f049f.pdfIn PDF document text
    • http://popumofaz.sdedesigns.com/uploads/1/3/1/0/131070420/9b61730f.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/1/0481/5244/5081/files/wwe_ultimate_superstar_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5018/8443/files/where_are_the_aurora_teagarden_mysteries_filmed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0364/0993/files/rockfish_hoke_elementary_school_hours.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1963/1765/files/phim_bo_hong_kong_long_tieng.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4184/7458/files/80911900125.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/3516/7400/files/pathfinder_2nd_edition_core_rulebook_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/1388/8936/files/troy_bilt_super_bronco_tiller_belt_diagram.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4874/7687/files/ted_ginn_kick_return_game.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8991/0167/files/bonomuputerififipuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bee3850e-a1a0-4f81-ae25-f7fc5af8fb95/39159657632.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aec07b6c-b551-4cf8-8eac-8e427d8213a9/sanugeguzomavifeme.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b77ec0ef-256a-4b64-931c-faad2f11bdfa/jofabi.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_off00005559.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5559 4960 bytes
SHA-256: c10d1efd24d32311d82fb820ac3165b42343dc722cb7b4db36ba06e43aefb218
font_01_sfnt_off00006633.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6633 9904 bytes
SHA-256: 7bf2e96732cdca85810a292c35ed69bf141ec5ae29aea803a1f29843e344175b

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