Malicious PDF — malware analysis report

Static analysis result for SHA-256 84e47e70f955c569…

MALICIOUS

PDF

44.2 KB Created: 2020-11-06 20:12:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: fc493eddea9bec756ae25a36794e670f SHA-1: 65ce035ddf258adf88da0d65af73d0071363e72f SHA-256: 84e47e70f955c56940b8c2148ee518c49ba352444d4aadefed541c40262615b1
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffset.ru/123?keyword=diary+of+an+8-bit+warrior PDF link annotation
    • https://kabudededawizo.weebly.com/uploads/1/3/1/3/131383409/6079293.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374207/normal_5f9da2993a6d9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445877/normal_5fa4c681c6cd7.pdfIn PDF document text
    • https://zifevenexi.weebly.com/uploads/1/3/4/5/134528386/mogesesa.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/9b53ec72f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366632/normal_5f878348d7a1b.pdfIn PDF document text
    • https://wonigebegi.weebly.com/uploads/1/3/1/6/131606731/74c746afc6.pdfIn PDF document text
    • https://gapudozesaneg.weebly.com/uploads/1/3/4/5/134525911/mebowokusepev-nufize-dalugile-nuzovodinusujow.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381289/normal_5f8f399d1a084.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371807/normal_5f980a72627f6.pdfIn PDF document text
    • https://wetuxabo.weebly.com/uploads/1/3/0/8/130873937/42137.pdfIn PDF document text
    • https://jodobape.weebly.com/uploads/1/3/4/3/134317169/siribaxotebid-zonutejit-sewojuvereje-xupikororol.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/7874aa23-bb53-46b0-94e9-3d57848db487/imagine_dragons_smoke_and_mirrors_album_download.pdfIn PDF document text
    • https://dipadek.files.wordpress.com/2020/11/zatirisepago.pdfIn PDF document text
    • https://podenujo.files.wordpress.com/2020/11/potokudowajipube.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2239f1f1-252a-4f46-afdf-90ee0e5d4e60/18807416362.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_off000060e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60E1 4780 bytes
SHA-256: 16b0abcf85260fe9759d9f490f997a710a55d312d3c7440704bfb16e136f181f
font_01_sfnt_off00007142.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7142 10792 bytes
SHA-256: cc86615275613ba50bf127b7aa16b1aecde664f73c08240aad80bd287cb46577
font_02_sfnt_off000095c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95C0 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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