Malicious PDF — malware analysis report

Static analysis result for SHA-256 d057347c4cbe957e…

MALICIOUS

PDF

42.3 KB Created: 2020-11-09 03:03:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15
MD5: 1ac3331c5de3027fb82b6b9638f4a5f7 SHA-1: f7b382726f7b70fd1a904357e2935da9074747c3 SHA-256: d057347c4cbe957e18a7c8454fe12a0b6435ad2b9e0cb661141cc04c07aac9f6
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=lowes+coupon+code+generator+2019+forum PDF link annotation
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/18ad995.pdfIn PDF document text
    • https://xogofodaromaf.weebly.com/uploads/1/3/4/3/134387758/b02fe0b3.pdfIn PDF document text
    • https://pefuxagofir.weebly.com/uploads/1/3/4/3/134359429/fimexarewo-liwar-modajumivu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://gogabimujuw.files.wordpress.com/2020/11/82575258512.pdfIn PDF document text
    • https://bebezabezite.files.wordpress.com/2020/11/mikidivujedig.pdfIn PDF document text
    • https://jowurijovu.files.wordpress.com/2020/11/minecraft_1.7.10_ev_modu.pdfIn PDF document text
    • https://gesitupar.files.wordpress.com/2020/11/bibodumobiruja.pdfIn PDF document text
    • https://losorul.files.wordpress.com/2020/11/ruzepomagowo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40de3544-1ca5-4d55-8343-537dde0d1a2e/tejofewuwiwemutuzuteje.pdfIn PDF document text
    • https://gezovuxa.files.wordpress.com/2020/11/60980608025.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea0ba765-831f-4c98-b23a-ef9c81612eed/active_student_prc_login.pdfIn PDF document text
    • https://vabavoresadi.files.wordpress.com/2020/11/debewasomogoro.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_off000060f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60F0 5960 bytes
SHA-256: aeb2d0a200fd8eaba2ab9dce705e53f06a17ebb5d3a8d0560ac1df0690aed881
font_01_sfnt_off00007543.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7543 11576 bytes
SHA-256: 77376fe72c6835db480a80ebe8603cf12134c2d627bbfeddc9427504ddbcd678