Malicious PDF — malware analysis report

Static analysis result for SHA-256 767f43d8d68db4f9…

MALICIOUS

PDF

56.4 KB Created: 2020-10-15 09:43:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: ee6ae3ca2e0b9c786749dbea98768799 SHA-1: 68d115033b20293fd4ce279de1dc3cea26da7beb SHA-256: 767f43d8d68db4f95c1d0647d15937368c6e37f9921a2acf0ad6aea319c68c2a
184 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=mapa+mundi+2020+pdf In PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/1a27643b41869.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/nidisetati.pdfIn PDF document text
    • https://boguvetasitob.weebly.com/uploads/1/3/1/3/131380850/4140341.pdfIn PDF document text
    • https://pobezewimo.weebly.com/uploads/1/3/2/6/132681951/jamixujumesuvudoni.pdfIn PDF document text
    • https://site-1038552.mozfiles.com/files/1038552/82607362682.pdfIn PDF document text
    • https://site-1039215.mozfiles.com/files/1039215/30226401249.pdfIn PDF document text
    • https://site-1039308.mozfiles.com/files/1039308/42491324389.pdfIn PDF document text
    • https://site-1039381.mozfiles.com/files/1039381/tapusisosi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369141/normal_5f87d08d31f30.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366381/normal_5f87357c70f67.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366381/normal_5f879ab542a07.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365998/normal_5f87197e084bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366343/normal_5f87d09dd7448.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/2b45cef5-7a18-472e-9594-7ed7ce381588/45499988704.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ffd61dc-c0cc-4666-acb7-5a506cab4b74/32528610367.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d37a519b-d3c9-4a22-bdc7-302298359591/wagarewulijafofizufet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26e813a3-fdee-49fe-99ab-d25878912108/73323986001.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53124c6a-3af6-49bd-a632-b757a7e92829/87537328785.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/063c45ab-8c36-475a-b439-ed29a222d093/87503824969.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b240a321-0f3e-4c0f-b23a-7f08cf70d80f/23151935814.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5dfd98d2-76ba-48cf-b727-0e804b52a745/45237630236.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9035f819-f408-48a3-823a-bf89f00372c0/6384919304.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4c38af6-95f7-4a55-a8be-c1af41bc370b/fuseliluvan.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_off0000850b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x850B 7748 bytes
SHA-256: 827b3c060d81778f9c286f1cba9843cb698d8ecc9f66dd5d64aa5a64e3494650
font_01_sfnt_off00009f61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F61 5160 bytes
SHA-256: 1abc6496487217f8c224c07e6b1d740d6aa019ccf3872ea8000b36fbc3db0bd9
font_02_sfnt_off0000b0e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0E4 10548 bytes
SHA-256: 158d34599cebf4b3d6a63da7764378e73ed92c6dc268f9dff513fb4aaf3f62dd