Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b643a0647412ac8…

MALICIOUS

PDF

50.0 KB Created: 2020-10-30 11:34:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: b3a5c53c821c80e0e88ef63f3319cbb3 SHA-1: 5fdebcb0c367caf5febc59dbe0e87e2e976a9f0f SHA-256: 1b643a0647412ac8ea420853fc994b7a3d2b2a34d86e5f2b528ed8352cf5d487
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://ttraff.me/123?keyword=alliance+property+management+fort+wayne In PDF document text
    • https://cdn-cms.f-static.net/uploads/4401505/normal_5f99ea5a1fdb8.pdfIn PDF document text
    • https://panidulupeju.weebly.com/uploads/1/3/0/9/130969186/kusutonewu.pdfIn PDF document text
    • https://wetuxabo.weebly.com/uploads/1/3/0/8/130873937/48455.pdfIn PDF document text
    • https://jugizefabugej.weebly.com/uploads/1/3/4/3/134377355/8df734ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368982/normal_5f8a9fdc93aa5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393647/normal_5f922c52acdad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366336/normal_5f89bfac55a32.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365638/normal_5f8883aa9109e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374542/normal_5f9761ed1d464.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369330/normal_5f99a8e6557a6.pdfIn PDF document text
    • https://xexovelez.weebly.com/uploads/1/3/0/8/130813416/889e0e9ecbd.pdfIn PDF document text
    • https://tudupumodowi.weebly.com/uploads/1/3/1/4/131406798/nenanofot.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/9572/6487/files/hotspot_shield_crack_version_for_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc9ab4bc-0e16-412f-bce6-fcfbf29c3f02/elder_scrolls_online_blacksmithing_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48033568-aa23-48ad-84e2-45463f5a544a/donkey_kong_country_emulator_cheats.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/4827/9459/files/xazirokuxi.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000084a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84A0 5340 bytes
SHA-256: ecdee664514f7d95b8d6f74d249705deabf150b947db3ef07d96db9a58d1e24d
font_01_sfnt_off000096d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96D5 10520 bytes
SHA-256: ea1ae2c36e9c3be400caf752ab7d064853553f8531bbef1ed5f545fb238016cd