Malicious PDF — malware analysis report

Static analysis result for SHA-256 40df593943fb567a…

MALICIOUS

PDF

43.5 KB Created: 2020-10-27 23:34:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 1d476a4a2a023352d6543575d77e9b0e SHA-1: c1a402f0ccc3124149d0bf968f2c8efc0484cee4 SHA-256: 40df593943fb567a867c145e424bd36f05536d5104b872a391ee5f770cb333b8
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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://ttraff.me/123?keyword=golden+sun+lunpa+guide In PDF document text
    • https://nosekuge.weebly.com/uploads/1/3/2/7/132740467/a2487d16666de9e.pdfIn PDF document text
    • https://gazesomudari.weebly.com/uploads/1/3/1/0/131070071/sijelapi.pdfIn PDF document text
    • https://vodiwisilob.weebly.com/uploads/1/3/2/6/132681054/7196078.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371808/normal_5f91b20ce605b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386829/normal_5f915ef8c1a73.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369633/normal_5f8fe0013776d.pdfIn PDF document text
    • https://naxedomabaxa.weebly.com/uploads/1/3/1/6/131606472/568948edbdfd.pdfIn PDF document text
    • https://ganulexotugoris.weebly.com/uploads/1/3/1/1/131164012/b89bc67f4e.pdfIn PDF document text
    • https://gunapozebufe.weebly.com/uploads/1/3/4/3/134316646/newuwakufi.pdfIn PDF document text
    • https://wipamixupes.weebly.com/uploads/1/3/4/4/134460990/vojimumiseduraliluwu.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006e2f.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006e2f.bin)
    • https://s3.amazonaws.com/ravuxudibure/mht_cet_hall_ticket_2019_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8252/2528/files/pathophysiology_of_colorectal_cancer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0061/7381/files/virtua_cop_2_sega_saturn.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3abba005-79ae-4732-bda1-73f120609323/livre_soupe_thermomix_tm5.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b46fa956-368c-4001-a112-42c2b89f2849/gipono.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29945f9e-d018-4741-831d-60bd605b0e78/xogumasoxixobatoxenolebos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe129873-58ff-4cd6-9abe-67c4877c5bcc/nextradio_apk_download.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_off00006e2f.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E2F 5064 bytes
SHA-256: 9db485a1b9bf65d4493629ad6e6ace599ac16d684b5089a8f48426f2dffcea8c
font_01_sfnt_off00007f7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F7B 9808 bytes
SHA-256: ce7df54c0e7ae32547f4ea0d0a736fc0c8dc04b10dbe2d8cd7790d86f546700b