Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f20eb0fa1ebc59e…

MALICIOUS

PDF

45.8 KB Created: 2020-10-22 21:11:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 1c62d35b72f9bf9b5c02198222b79697 SHA-1: f1fab1de0df8508ec7c4feed8b03132159c2d65a SHA-256: 5f20eb0fa1ebc59eca248a19cf6d2f7db0dfc2b7e70e4e0d1a76412e1fa77b83
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://cctraff.ru/123?keyword=sauvegarde+sms+ios+vers+android In PDF document text
    • https://samomalekadoj.weebly.com/uploads/1/3/1/4/131438786/6feef4b7.pdfIn PDF document text
    • https://digafixi.weebly.com/uploads/1/3/0/7/130776371/2ca16d7ea56f64e.pdfIn PDF document text
    • https://rogidalot.weebly.com/uploads/1/3/1/6/131636841/35157.pdfIn PDF document text
    • https://xumogimunosu.weebly.com/uploads/1/3/1/6/131607683/munaziruzaxuw-wowomulurodi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366047/normal_5f8700fce957a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367643/normal_5f8a45ab75dec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367916/normal_5f8a2cfa7400b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388620/normal_5f8ef8d3b6f84.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366956/normal_5f8e78417f954.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401971/normal_5f913e6bb726c.pdfIn PDF document text
    • https://vopevejefed.weebly.com/uploads/1/3/1/6/131606133/2582300.pdfIn PDF document text
    • https://xubuvene.weebly.com/uploads/1/3/1/3/131380433/4783145.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://uploads.strikinglycdn.com/files/0c5f60ba-a71c-4802-bded-ec3db5534620/resefumisere.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30b104c4-f8fc-44d1-937d-7dd4f0bca9aa/8077086220.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/302a31d4-a75c-43d0-9290-f64961245bc0/40629403283.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ac666bb-a826-466a-9d9f-dda3dc5f2145/rsultat_d_exploitation_calcul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b90b2ece-1869-4b4d-9afb-a9b0cd2a3be7/firobojanib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5fb8933-b89e-4069-af67-f6909b9951a7/zejife.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_off000064bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64BF 5076 bytes
SHA-256: 6becdbcd4aa0380589a0a9f3d84fa8e3639eb393e9f3fbad4699e3d6849ecdc5
font_01_sfnt_off000075d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75D8 11436 bytes
SHA-256: 92c56ab36bd847465ceaa8756acf6bc1950ed478de8f78deb5956cfc3f0e6ff0
font_02_sfnt_off000099fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99FD 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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