Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd002ead9f1d20f3…

MALICIOUS

PDF

38.3 KB Created: 2020-10-28 16:10:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: fbcc14604b3b29e4d646a8dbf9089139 SHA-1: 302514265a739404af855acb3580e6b1175e0a7d SHA-256: dd002ead9f1d20f3cc01b673615265a5688e69c451432bf22c952738a94fb733
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.me/123?keyword=current+electricity+pdf+vedantu In PDF document text
    • https://xusawoji.weebly.com/uploads/1/3/0/7/130739635/5654138.pdfIn PDF document text
    • https://jirunemopisitex.weebly.com/uploads/1/3/4/3/134332051/1675762.pdfIn PDF document text
    • https://jovikuveditowe.weebly.com/uploads/1/3/0/8/130874612/sakebemerim.pdfIn PDF document text
    • https://bogadisosupotaj.weebly.com/uploads/1/3/0/7/130776541/janijufexosaxatalop.pdfIn PDF document text
    • https://soxixafefude.weebly.com/uploads/1/3/4/4/134434462/wojelupofusup.pdfIn PDF document text
    • https://kekerisasil.weebly.com/uploads/1/3/0/7/130775365/zijapimup_numexin_musukameruk_mexasog.pdfIn PDF document text
    • https://jirunemopisitex.weebly.com/uploads/1/3/4/3/134332051/6618594.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bezegoluzose/taegutec_cutting_tools_catalogue_filetype.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/6483/2412/files/vinogij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/1288/2071/files/6093607654.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/3049/4363/files/19009908309.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80ffff69-b6ee-4cbe-8acd-b3e1287266e8/ro_blacksmith_leveling_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab5033bb-7230-4b98-b143-2b3ea546a16a/mack_truck_service_manual_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/8650/1806/files/insulin_resistance_thesis.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/zakaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8149843-dec6-4b40-bdba-4d77036055c1/8008980096.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/4991/5845/files/collective_nouns_things_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/7073/2456/files/common_organic_solvents_table_of_properties.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/laporan_pendahuluan_penyakit_jantung_koroner.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/0139/5369/files/shell_rimula_r3_x_15w40.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea63873a-bd24-42b6-9800-2e4f2a73c4c6/24539722974.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ee8ce35-2047-404c-9d1e-1292d05ef800/fufiwi.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_off00005a42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A42 5040 bytes
SHA-256: 24b9efe528347033bbd61cf95ae72a8f160e10230f98e92ba73435b5e47b825f
font_01_sfnt_off00006b84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B84 9484 bytes
SHA-256: 2b217798fe61381a3112c5f7c7b7377632712a29c3547974f90e07b974bc0474

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