Malicious PDF — malware analysis report

Static analysis result for SHA-256 869b231207bf0f9b…

MALICIOUS

PDF

51.1 KB Created: 2020-10-25 18:24:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 01960e977fcf523ba1cb370f02bec082 SHA-1: da12680201cf6022b1ae96d6c0e30b5738f8682a SHA-256: 869b231207bf0f9b752f804421f019d8603a0b51a1c70d763692bbacb7f1cb98
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/aws?keyword=alimentos+permitidos+na+dieta+cetogenica+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4379720/normal_5f910f6b2242f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365638/normal_5f9095254eed7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405194/normal_5f93ef3a45c1d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379731/normal_5f8b8f761e87a.pdfIn PDF document text
    • https://fidevawane.weebly.com/uploads/1/3/0/8/130814252/vefikikenud.pdfIn PDF document text
    • https://tubenuluni.weebly.com/uploads/1/3/1/4/131437864/391d9f195a0c8.pdfIn PDF document text
    • https://jeponiruwapin.weebly.com/uploads/1/3/0/7/130776483/faketirodujewotowur.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/1/0438/4305/9862/files/64708082789.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0830/8901/files/lobamejujavizetonovupo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/4080/2469/files/51349721328.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3284/5207/files/42953442599.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/2939/1516/files/fetiza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55a240e5-c5c2-4461-944e-e1363e223f1c/fosepizajosijaziwanor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f7dfbdc-c6d4-4d3d-82d9-0cf5255aa44d/xugemewinibagemezufega.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/263f5e5c-3d55-4132-9dce-050aa847cd5c/how_much_does_a_pig_cost.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3a463c6-f12c-4d00-a58e-662eccaa92ca/kojulesubibodozafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5209/5898/files/cleo_4_gta_sa_download_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/5328/4008/files/farming_simulator_18_revdl_com_mod_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7caa8d80-a70b-40b6-85e8-bb1fb19805ab/5473821430.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0e8de4e-9509-4e02-a056-ba6900aa6cdd/6979932492.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da62ea7f-4908-41fa-99c3-be177f32bf7b/25883805566.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/648fa72d-e1de-4607-bd3f-1812aa39e3b4/82250018760.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90a61dac-19da-464f-9e87-0799b567ae50/fx_115_vs_fx_991.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_off000084d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84D8 5464 bytes
SHA-256: ed02ffb69459d88ff37b0db69c1afa5ddcc367518baaa1df1b5f9912fa37201f
font_01_sfnt_off00009753.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9753 11492 bytes
SHA-256: df550e740e0422251502bdd256363fb03dc6b37ad7d8fc3796fca0d9698bc12a