Malicious PDF — malware analysis report

Static analysis result for SHA-256 91613d668856795f…

MALICIOUS

PDF

41.2 KB Created: 2020-10-31 10:09:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 319e1c956858b7a5f864805ccc004d83 SHA-1: daa869f02232ea13018889ea801d7e061e0f9a7e SHA-256: 91613d668856795f99d868819d7b9fa1c26d8acd96b33e97238a2effff045b13
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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://cctraff.ru/pify?keyword=redragon+mouse+review In PDF document text
    • https://sopulekazixov.weebly.com/uploads/1/3/0/7/130776801/xexamaxa_zaxadanuri.pdfIn PDF document text
    • https://femitinekabel.weebly.com/uploads/1/3/1/4/131437683/ziban.pdfIn PDF document text
    • https://pukotegifo.weebly.com/uploads/1/3/0/8/130874060/4dfb8259603.pdfIn PDF document text
    • https://tokunebejuz.weebly.com/uploads/1/3/4/3/134323577/vapalux.pdfIn PDF document text
    • https://xogexemufak.weebly.com/uploads/1/3/1/4/131437987/dusexuzemezej.pdfIn PDF document text
    • https://vodipewelo.weebly.com/uploads/1/3/1/6/131637384/tewazol.pdfIn PDF document text
    • https://viweposedijul.weebly.com/uploads/1/3/1/0/131070314/resajutafekana-mivetepedijaw-dodarolosobuk-rojaxopof.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/3d999338-e3d8-4117-8840-61dddeeb299c/5514420876.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63589ad5-9de4-49d3-bf46-eb3929d685d1/sedex.pdfIn PDF document text
    • https://s3.amazonaws.com/tetenifeme/44794832364.pdfIn PDF document text
    • https://s3.amazonaws.com/rotowan/lajumok.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/gupudelixivalojadipoxoje.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_off0000615a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x615A 5272 bytes
SHA-256: e445e8a6597728332489a0a0fb838ccf53bb328aae543a5b52749e8584ed8a80
font_01_sfnt_off0000734a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x734A 11008 bytes
SHA-256: 5953b2ec0e3ea85ed7217857befe51b28b29306cefff3afee81160bdbc5b78a0