Malicious PDF — malware analysis report

Static analysis result for SHA-256 460ee4f878dcc841…

MALICIOUS

PDF

41.2 KB Created: 2020-11-09 10:48:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 5041aab359cb331e0aef290b561d4fc2 SHA-1: 208d20a114e5c73f23a38d3409c5bae95fe7a4f1 SHA-256: 460ee4f878dcc841f08125bd9ebccbc2ba2ada52bedd86d6d79a9d7d1a569bd1
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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/aws?keyword=pathoma+pdf+free PDF link annotation
    • https://gekitudijelal.weebly.com/uploads/1/3/4/2/134265938/7857302.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422918/normal_5f9b9d36e3b68.pdfIn PDF document text
    • https://virataxutepubom.weebly.com/uploads/1/3/0/8/130874282/kimodusanadumom.pdfIn PDF document text
    • https://kudumegowejo.weebly.com/uploads/1/3/4/2/134266354/50f61df3d4.pdfIn PDF document text
    • https://rutukesusejam.weebly.com/uploads/1/3/4/4/134464581/zusivokivunos.pdfIn PDF document text
    • https://nurenevomezuku.weebly.com/uploads/1/3/4/6/134641424/5391617.pdfIn PDF document text
    • https://bofezukidev.weebly.com/uploads/1/3/4/4/134464138/9e1fa9fb71e4f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451028/normal_5fa07799e44be.pdfIn PDF document text
    • https://jatilesaza.weebly.com/uploads/1/3/4/3/134316516/5424435.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/02054b26-fee3-4fd8-8059-0b0adfe6d9c7/installing_and_configuring_windows_s.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af0c252a-a507-4426-8e5e-45e14da33d0d/telidorilezebonazux.pdfIn PDF document text
    • https://s3.amazonaws.com/muxegeza/little_critter_just_go_to_bed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6271bc83-a653-49b9-bda8-0978f959534d/papumuf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eddfb839-f3f6-4831-966a-99993d785ad4/55055331766.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e0627b5-4751-4c01-a4bd-937fda28f1db/65708525827.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_off000062d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62D9 5072 bytes
SHA-256: 8116162692cb8b03d377263d0291aa2fd1bd69cb66912f941d80eac8ed3bd633
font_01_sfnt_off000073f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73F3 10616 bytes
SHA-256: 1755cdd1fb6d6cfd0b94aa60511a9d8bfa42cc72aafa7f82249b225639612580