Malicious PDF — malware analysis report

Static analysis result for SHA-256 d063714e1c3a263d…

MALICIOUS

PDF

47.8 KB Created: 2020-11-08 17:36:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: adb60b413dd3478b472cf2c659f3ddfc SHA-1: b2b80ea9a602d87b55ae3c2e61a75a647d052e60 SHA-256: d063714e1c3a263d99e0a9ff010c936de276ea8bc3faa98ee57d83a4ce818945
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://traffmen.ru/aws?keyword=castle+wars+unblocked+games In PDF document text
    • https://vonubaxuted.weebly.com/uploads/1/3/1/4/131452839/fedug.pdfIn PDF document text
    • https://kiteginizi.weebly.com/uploads/1/3/1/8/131871518/rulenewawetusew.pdfIn PDF document text
    • https://xifobosakup.weebly.com/uploads/1/3/2/8/132815359/250361.pdfIn PDF document text
    • https://jinokafolamod.weebly.com/uploads/1/3/4/3/134310646/196d02d71608a2.pdfIn PDF document text
    • https://siwuretigi.weebly.com/uploads/1/3/4/3/134319511/felagafukafotadu.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://temobozuz.files.wordpress.com/2020/11/89830651401.pdfIn PDF document text
    • https://pigazox.files.wordpress.com/2020/11/11044368142.pdfIn PDF document text
    • https://dukitavix.files.wordpress.com/2020/11/income_effect_of_alternative_product_costing_methods.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1076df5e-8425-4e38-9489-e31088694657/2-pentanone_ir_spectrum.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_off00007049.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7049 5412 bytes
SHA-256: 287e7562b2da5bfaaf6df9886c74ba73f87eac27bae258c601dfe27931e05777
font_01_sfnt_off000082a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82A8 9960 bytes
SHA-256: 20473f8a448460a0447d2a681083d2b44200f017f90d05b0c24c141adae0829a
font_02_sfnt_off0000a4b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4B1 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2