Malicious PDF — malware analysis report

Static analysis result for SHA-256 6504605021c1743f…

MALICIOUS

PDF

48.3 KB Created: 2020-10-25 15:58:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 0777829c0163f71633caf5fa1634a0b2 SHA-1: 2461e4d90ec98b0df0495b5c3230f534bec2a1b5 SHA-256: 6504605021c1743f3ae4cb2ba6b794be04c0ce122f939e738a32098f0cf9f471
234 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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/123?keyword=xilinx+petalinux+installation+guide In PDF document text
    • https://xedaliwim.weebly.com/uploads/1/3/1/4/131454603/6261259.pdfIn PDF document text
    • https://gujodoludota.weebly.com/uploads/1/3/2/6/132681740/7488526.pdfIn PDF document text
    • https://fotejisatowonu.weebly.com/uploads/1/3/2/3/132302873/fobepitububonipagav.pdfIn PDF document text
    • https://kekerisasil.weebly.com/uploads/1/3/0/7/130775365/f56d4d8.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/0661e57d-f49f-4532-ba53-0b0288df57c2/79643988614.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c188558c-b499-4d2c-a4db-3bfb4654967b/best_ark_dinos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2ee6b62-68cb-4fcf-b0e1-832ad85bd2b1/nevaxigeze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7a4b752-a570-4fe4-93c9-030c82951487/tulefezasirene.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/328c4357-2f0c-4169-a6a3-972c94ab9e9b/kifidalam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c993306-aff3-4bec-9db8-acd56ea96f3b/90305318660.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/sikalewumofutulugiromaj.pdfIn PDF document text
    • https://s3.amazonaws.com/samopakamefap/sugar_skull_colouring_pages.pdfIn PDF document text
    • https://s3.amazonaws.com/jeduzizonox/luxuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5014/7745/files/38030337896.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/6682/5115/files/ejercicios_saludos_y_presentaciones_en_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9320/6189/files/2020_jetta_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/4623/8880/files/morasagenuso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbda5a5d-5cc4-4f33-9250-6bb389eca9b4/glencoe_mathematics_grade_8_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffeb6383-e9e3-41bf-bc11-6048409a5eb1/Darmkrebs_Stadium_3c_Behandlung.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67190261-d72f-4098-ac9e-4294eb6c7bbf/62276122735.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b56e98ed-8aee-4d2a-92fb-d4bfd353c3ee/exploring_the_way_life_works_the_science_of_biology.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37be8176-fd47-408a-840a-3f49328ff113/multiplication_chart_30x30_printable.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D2D 3304 bytes
SHA-256: 7c54c13321a22b13e8c8cf75e560e9151677e82cfd7fb4553fa360d909f90a16
font_01_sfnt_off00007912.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7912 5076 bytes
SHA-256: d372d1188783da4140070df7404bfec796b9967db8804aaf6226922de2c6b270
font_02_sfnt_off00008a5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A5A 12412 bytes
SHA-256: 5ce4a322e077b700f7dbee79bd1af1291cc095dde56f5340c178d8efac74af46