Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccf581322255c654…

MALICIOUS

PDF

48.3 KB Created: 2020-10-17 18:34:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 5726ff64cafa5d8b17d5ed23ec1198d5 SHA-1: e49a1ad79ba51e7e596375839aa2c3ff67f2d2ca SHA-256: ccf581322255c6544f205acb32043bfbdb5fe88e3400029c58c6d3e597fde630
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://ggtraff.ru/123?keyword=canteen+proposal+letter+sample+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367912/normal_5f8787375da45.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365612/normal_5f8953df4acd7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375698/normal_5f8af0d444678.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369165/normal_5f8988e14e2aa.pdfIn PDF document text
    • https://lerelapukuvi.weebly.com/uploads/1/3/0/7/130740054/d43c1d9f9e2.pdfIn PDF document text
    • https://nakumupapetiz.weebly.com/uploads/1/3/2/7/132741615/559e6419.pdfIn PDF document text
    • https://fekudumubaf.weebly.com/uploads/1/3/2/6/132681201/2bba1d0.pdfIn PDF document text
    • https://tegugozitofo.weebly.com/uploads/1/3/0/8/130874592/6f488075198f91f.pdfIn PDF document text
    • https://sirawomaperuli.weebly.com/uploads/1/3/1/3/131398091/ccd87897318c8af.pdfIn PDF document text
    • https://jeponiruwapin.weebly.com/uploads/1/3/0/7/130776483/5849510.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/kadijamiruvinugeno.pdfIn PDF document text
    • https://jamuseramomuf.weebly.com/uploads/1/3/1/8/131871426/jafowisada.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0494/0441/2071/files/liwad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/203c8454-4e32-439f-b764-5e4c580c023e/zelonijejotudabe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07e63923-caea-46c1-bc0a-bd2acb80e3f7/rimogiwa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89a92529-4e3f-47db-bcc9-de0896079d6a/10469342880.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f168291-1198-4eac-9a5e-160b89c7e853/61662455468.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1511bf5d-e370-466b-be49-8c45e4e3cb7b/potogotefofotetavimizubu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23045c79-a74a-423c-a7c0-0d12ca9b4379/4801895928.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54c72af1-df80-42a0-813e-da6296541cc9/vurirovavewe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfcf36c2-4749-4bc5-88e5-d791ff2b9d28/godeso.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_off00007162.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7162 4948 bytes
SHA-256: 703acfd4f539861dddc9120d42d57371f8a0b3d57e42b5bebd101e293fe78ded
font_01_sfnt_off00008219.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8219 10524 bytes
SHA-256: 75ddcf3fb9e595d6076a897e1aa6110e7f9792f62048a6d74fb2276d81a63587
font_02_sfnt_off0000a5e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA5E1 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

Open this report in the interactive analyzer, or submit your own file for analysis.