Malicious PDF — malware analysis report

Static analysis result for SHA-256 7da0f84b2b98092b…

MALICIOUS

PDF

63.4 KB Created: 2020-10-25 10:01:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: e6521f225dc295529488f099c76d39de SHA-1: dc8528c281208634089c92979ed40ee982bdf057 SHA-256: 7da0f84b2b98092b0d163a89d22ca4943b7d537a7f4ad37981fd552e6867c49d
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://ggtraff.ru/pify?keyword=the+spiderwick+chronicles+the+field+guide In PDF document text
    • https://komamopiragi.weebly.com/uploads/1/3/4/4/134444029/xosugadoxepot-simokus.pdfIn PDF document text
    • https://bizetuxerupa.weebly.com/uploads/1/3/0/8/130873791/9109322.pdfIn PDF document text
    • https://gazesomudari.weebly.com/uploads/1/3/1/0/131070071/25ee093b362afd5.pdfIn PDF document text
    • https://damijuvik.weebly.com/uploads/1/3/1/3/131381376/xujupefodad_pamiveluzexebo_jekujagaz.pdfIn PDF document text
    • https://lifotuvuzaraxur.weebly.com/uploads/1/3/0/7/130775275/fitamalekalez_rikopamupeko_tidagijulud_sunabi.pdfIn PDF document text
    • https://rimosuvifakub.weebly.com/uploads/1/3/4/3/134310068/d0392a058258.pdfIn PDF document text
    • https://nogegonimever.weebly.com/uploads/1/3/4/3/134340032/jonod_wutoteg.pdfIn PDF document text
    • https://tisatazufewuvo.weebly.com/uploads/1/3/1/1/131163687/sukojiz_leludebasitov_riwatexopixo_joteligaj.pdfIn PDF document text
    • https://gaxopekel.weebly.com/uploads/1/3/0/9/130969853/jilufajetizipep.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367921/normal_5f8a28b8c9aa3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383321/normal_5f914fd37d217.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000b9ef.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000b9ef.bin)
    • https://cdn.shopify.com/s/files/1/0479/4803/8311/files/vewate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4365/9677/files/aosp_keyboard_apk_lollipop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8602/9994/files/protected_broadcast_android_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0571/2296/files/lasavajuwozasekuxij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9816/8743/files/elkin_funeral_home_pa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e8737b0-fb7b-4a41-9208-a78f08a56c99/moxukurevu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c73bcce-972a-46f3-8283-91ec42d1e8f7/shola_allyson_free_music_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c917205-56cf-4354-af7f-ed347235bc98/57738792351.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7105/2703/files/62669243083.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6564/6999/files/29745666618.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/7976/9498/files/90894914483.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/4415/4791/files/37219749719.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0506/4582/7734/files/favifovegikikomenus.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 extracted file (font_00_sfnt_off0000b9ef.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b9ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9EF 5312 bytes
SHA-256: 07d82cc64299f2bf6ae3c86873012d734c704918e2878ab0e0eca1f2c85c23b5
font_01_sfnt_off0000cc16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC16 10364 bytes
SHA-256: 0aa7a908bec4e231f30b3b5b0c955a796821f2203431e2521e6d8e6c867810fe